# Trace: Exploring Agent Role Using ACP Protocol

Agent: codex | Model: GPT-5.4 | Project: traces

---

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "nl -ba docs/git-integration.md | sed -n '150,175p'",
  "max_output_tokens": 2000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: e5e427
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 645
Output:
   150	
   151	The imported trace appears in the local TUI with a badge indicating it's imported, not locally generated. This enables offline review and future features like injecting trace context into new agent sessions.
   152	
   153	## Frontend
   154	
   155	The trace detail page shows which commits reference the trace (if the user has git notes locally or the trace was loaded via a PR link). The trace list can filter by "traces in this repo" if the frontend knows the repo context.
   156	
   157	## Further integrations
   158	
   159	The git notes and export API are low-level primitives. The GitHub App, TUI, and frontend are the first things built on them, but the same building blocks open up more:
   160	
   161	- **IDE extensions**: show trace context inline when viewing a file or blame annotation
   162	- **MCP server**: expose trace lookup as tools so any MCP-compatible agent can query traces by ref, file, or directory
   163	- **LSP**: hover on a function to see which trace produced it
   164	- **Agent skills**: an agent working on a repo looks up traces for the code it's reading to understand prior decisions before making changes
   165	- **CI/CD**: fail a check if a PR has no traces attached (attestation enforcement)
   166	
   167	## Open questions
   168	
   169	**Note ref naming**: `refs/notes/traces` is clean but could conflict if another tool picks the same name. `refs/notes/traces-com` or including a domain (`refs/notes/traces.com`) would be more defensive.
   170	
   171	**Note vs trailer**: An alternative to git notes is commit message trailers (`Traces-Id: abc123`). Trailers are more visible and survive all history operations natively, but they pollute commit messages and can't be added after the fact. Git notes are the right choice for metadata that should travel with commits without being part of the commit itself.
   172	
   173	**Privacy**: Traces may contain sensitive conversation content. The visibility model (private/direct/public) already handles access control, but users should understand that linking a trace to a repo makes it discoverable by namespace members. A confirmation prompt on first link might be appropriate.
   174	
   175	**git-ai coordination**: If the user has git-ai installed, both tools write notes on commit. They use separate refs (`refs/notes/ai` vs `refs/notes/traces`) so they don't conflict, but the push refspec configuration needs to handle both. git-ai already manages push refspecs, so an integration point where git-ai knows about traces' ref would avoid duplicate configuration.

```

## Assistant

ACP looks worth supporting, but I’d treat it as a new live protocol layer for Traces, not a replacement for the current file/db adapters.

**ACP**
ACP is an open client↔agent protocol built around JSON-RPC sessions. The client initializes capabilities, creates or loads a session, sends prompt turns, and receives streamed `session/update` notifications for message chunks, tool-call lifecycle, plan updates, and status changes. It also has `session/list` and `session/load`, so a client can discover prior sessions and replay them, not just drive live chat. As of March 16, 2026, the docs describe stdio JSON-RPC as the primary transport and mark remote HTTP/WebSocket support as WIP; they also deprecate “session modes” in favor of session config options. Sources: [Introduction](https://agentclientprotocol.com/get-started/introduction), [Overview](https://agentclientprotocol.com/protocol/overview), [Architecture](https://agentclientprotocol.com/get-started/architecture), [Session Setup](https://agentclientprotocol.com/protocol/session-setup), [Session List](https://agentclientprotocol.com/protocol/session-list), [Prompt Turn](https://agentclientprotocol.com/protocol/prompt-turn), [Tool Calls](https://agentclientprotocol.com/protocol/tool-calls), [Agent Plan](https://agentclientprotocol.com/protocol/agent-plan), [TypeScript SDK](https://agentclientprotocol.com/libraries/typescript).

**How it fits Traces**
Your current CLI architecture is storage-reader based: adapters parse local files/SQLite into Traces events, then expose discovery, content loading, subscriptions, and current-session hints. That’s visible in [docs/cli.md](/Users/tarunsachdeva/code/traces/docs/cli.md#L122), [adapter.ts](/Users/tarunsachdeva/code/traces/cli/src/adapters/adapter.ts#L35), and [docs/adding-agents.md](/Users/tarunsachdeva/code/traces/docs/adding-agents.md#L7). ACP actually maps onto that contract pretty cleanly:

- `getTraces()` -> ACP `session/list`
- `getTraceContent()` -> ACP `session/load` and rebuild the transcript from replayed updates
- `subscribe()` -> live `session/update`
- `getCurrentTraceHint()` -> active ACP session id/path if the runtime exposes it

So I would add an `AcpAdapter` family beside the current file parsers, not instead of them. That gives Traces one generic integration for any ACP-compatible agent, and the ACP registry already overlaps heavily with your world: Codex CLI, Claude Code, Cline, OpenCode, Amp, Gemini CLI, Pi, etc. See [Registry](https://agentclientprotocol.com/get-started/registry).

**Recommendation**
1. Build a generic ACP transport plus adapter, behind a feature flag, and start read-only with `initialize`, `session/list`, and `session/load`.
2. Keep file-based adapters as fallback. ACP only helps when the agent exposes ACP or Traces is in the session path.
3. Preserve ACP-native data instead of flattening too aggressively. Your current event model in [types.ts](/Users/tarunsachdeva/code/traces/cli/src/types.ts#L28) only has six event kinds, so plan updates, approval requests, command updates, and config changes would get lost. I’d store raw ACP envelopes alongside normalized Traces events.
4. Do not treat ACP slash commands as the main Traces hook. Your current `share-to-traces` skill/env-hint flow still matters until Traces is actually acting as an ACP client or proxy; see [docs/adding-agents.md](/Users/tarunsachdeva/code/traces/docs/adding-agents.md#L183) and [share.ts](/Users/tarunsachdeva/code/traces/cli/src/commands/share.ts#L546).
5. If you later make Traces an ACP client, use ACP session setup to attach a Traces MCP server. That is the cleanest way to let any ACP agent query prior traces or publish to Traces without bespoke per-agent setup, and it matches the MCP direction you already called out in [docs/git-integration.md](/Users/tarunsachdeva/code/traces/docs/git-integration.md#L157).

Net: ACP should become a first-class adapter/input protocol for Traces, and eventually the standard way Traces injects its own MCP capabilities into agent sessions. I would not rewrite the existing adapter stack around it yet, but I would absolutely prototype a generic ACP-backed adapter next.

## User

Since existing agents we support already support ACP, how would we use those integrations? 

Should we consider ourselves an ACP client?

This is alos interesting: https://docs.openclaw.ai/tools/acp-agents

Keep riffing on this, I'm trying to develop a mental model for ACP with Traces.

## Assistant

I’m checking the ACP and OpenClaw docs directly so I can tighten the mental model around who is the client, who owns the session, and how Traces would sit in that graph.

## Assistant

**Short Answer**
Yes, but only in the cases where Traces actually owns or can attach to the ACP session.

The key mental model is: ACP is not a global discovery bus for agents. It is a client-to-agent session protocol. So “Codex/Claude/OpenCode support ACP” means Traces can talk to them through ACP if Traces launches them, or if there is a shared ACP bridge/backend/session store. It does not mean Traces can automatically inspect sessions another client already owns.

**What Traces Would Be**
I’d treat “ACP client” as a role, not Traces’ whole identity.

- Today, Traces CLI is mostly a post-hoc importer over agent storage: [adapter.ts](/Users/tarunsachdeva/code/traces/cli/src/adapters/adapter.ts#L35), [docs/cli.md](/Users/tarunsachdeva/code/traces/docs/cli.md#L122).
- If Traces starts calling `initialize`, `session/list`, `session/load`, `session/new`, or `session/prompt`, then that subsystem is an ACP client.
- Separately, Traces should still think of itself as an MCP provider. ACP is how Traces talks to the agent runtime; MCP is how the agent runtime talks to Traces tools/data. ACP’s architecture docs explicitly frame MCP that way.

So the clean model is:

- ACP: Traces -> agent session
- MCP: agent session -> Traces tools
- Traces store/UI: normalized history, sharing, replay, search

That also means OpenClaw is a useful analogy. It uses ACP as a session router/broker: it binds threads to ACP sessions, resumes them with `session/load`, and controls them with `/acp ...` commands. That is a strong example of “ACP client as control plane,” not just “ACP client as editor UI.”  
Source: [OpenClaw ACP Agents](https://docs.openclaw.ai/tools/acp-agents)

**How I’d Use ACP In Traces**
I would use ACP in three distinct modes:

- `ACP import mode`: read-only ACP client. Use `session/list` and `session/load` to import exact session history. This is the safest first step.
- `ACP live-follow mode`: for sessions Traces owns, map `session/update` directly into trace events instead of polling files.
- `ACP host mode`: optional later. Traces launches sessions with `session/new`/`session/prompt`, handles permissions, and injects a Traces MCP server into the session.

That maps very cleanly onto your current adapter contract:

- `getTraces()` -> `session/list`
- `getTraceContent()` -> `session/load`
- `subscribe()` -> `session/update`
- `getCurrentTraceHint()` -> exact ACP session id instead of today’s heuristics in [share.ts](/Users/tarunsachdeva/code/traces/cli/src/commands/share.ts#L600)

That said, ACP does not replace file adapters. It complements them.

- If Zed/OpenClaw/some other client owns the ACP session and exposes no shared backend/store, Traces still needs file/db adapters.
- If there is a bridge or shared store, ACP becomes the better source of truth.
- OpenClaw’s docs are useful here because they make session ownership explicit: runtime backend, bound session key, resume id, host-side execution.

**Important Nuances**
- Many ACP integrations are not “native agent speaks ACP directly”; some are via adapters/bridges. The ACP agents page currently lists things like Codex CLI via Zed’s adapter, Claude Agent via Zed’s SDK adapter, and Pi via a `pi-acp` adapter. So ACP gives you a common session model, not necessarily a uniform install/runtime story.
- ACP slash commands are not the main Traces integration point. ACP slash commands are agent-advertised to the client. Traces features like “search prior traces” or “share this trace” fit better as MCP tools or client-side UI, not ACP slash commands.
- As of March 16, 2026, ACP still says to design around `stdio`; Streamable HTTP is still draft. So I would build local/host-side ACP support first.

**What I’d Recommend**
1. Add an ACP-backed adapter layer without removing file adapters.
2. Start with read-only `initialize` + `session/list` + `session/load`.
3. Store raw ACP envelopes alongside your normalized trace events; your current event model in [types.ts](/Users/tarunsachdeva/code/traces/cli/src/types.ts#L28) is too narrow for plans, approvals, diffs, command availability, and richer tool lifecycle.
4. If that works well, add live-follow for Traces-owned ACP sessions.
5. Only after that consider full “Traces as ACP host/client UI” with permission handling and MCP injection.

Net: yes, I think Traces should become an ACP client in a scoped way. Not because ACP replaces your adapter architecture, but because ACP can become a new session source and a better control-plane primitive than parsing everybody’s private storage forever.

Sources: [ACP Introduction](https://agentclientprotocol.com/get-started/introduction), [ACP Overview](https://agentclientprotocol.com/protocol/overview), [ACP Architecture](https://agentclientprotocol.com/get-started/architecture), [ACP Initialization](https://agentclientprotocol.com/protocol/initialization), [ACP Session Setup](https://agentclientprotocol.com/protocol/session-setup), [ACP Session List](https://agentclientprotocol.com/protocol/session-list), [ACP Tool Calls](https://agentclientprotocol.com/protocol/tool-calls), [ACP Slash Commands](https://agentclientprotocol.com/protocol/slash-commands), [ACP Agents](https://agentclientprotocol.com/get-started/agents), [OpenClaw ACP Agents](https://docs.openclaw.ai/tools/acp-agents)

## User

Yeah, what if we wanted to become an agent ourselvs.

## Assistant

I’m checking the ACP “agent” side specifically so I can answer this as an architecture decision, not just a role label.

## Assistant

Yes. If Traces became an ACP agent, the cleanest mental model is not “Traces is now another Codex clone.” It’s “Traces exposes a session runtime that other ACP clients can talk to.”

ACP’s agent role is pretty concrete: the client launches the agent subprocess over `stdio`, calls `initialize`, then `session/new` or `session/load`, then `session/prompt`, and the agent streams `session/update` notifications for text, plans, tool calls, command availability, and permission requests. Sources: [Initialization](https://agentclientprotocol.com/protocol/initialization), [Session Setup](https://agentclientprotocol.com/protocol/session-setup), [Prompt Turn](https://agentclientprotocol.com/protocol/prompt-turn), [Tool Calls](https://agentclientprotocol.com/protocol/tool-calls), [Slash Commands](https://agentclientprotocol.com/protocol/slash-commands), [Transports](https://agentclientprotocol.com/protocol/transports).

The important distinction is this:

- `MCP server` means “agents can use Traces as a tool/data source.”
- `ACP client` means “Traces can drive other agents.”
- `ACP agent` means “other clients can drive Traces.”

Those are separate roles. Traces can do all three.

**What “Traces as an ACP agent” could mean**
There are three viable versions:

1. `Trace analyst agent`
This is the smallest, cleanest version. A client connects to Traces and asks:
- “What prior traces touched this file?”
- “Summarize the reasoning behind this commit.”
- “Find similar sessions for this bug.”
- “Generate a handoff from the last 3 traces in this repo.”

That is a real ACP agent, but specialized. It does not need to be a full coding harness.

2. `ACP proxy/router`
This is the most strategic version. Traces is both:
- an ACP agent to the outside world
- an ACP client to Codex/Claude/OpenCode/etc upstream

So the flow becomes:

`Editor/OpenClaw/Zed -> Traces ACP agent -> upstream ACP agent`

In that model, Traces can:
- choose which real harness to run
- inject Traces MCP tools/context into the session
- record exact ACP events instead of scraping files later
- enforce permission/policy/logging centrally
- map every ACP session directly to a Traces trace/share URL

This is the OpenClaw-style pattern, just with Traces as the coordinator instead of OpenClaw. Source: [OpenClaw ACP Agents](https://docs.openclaw.ai/tools/acp-agents)

3. `Full native coding agent`
Traces owns the model/tool loop itself and speaks ACP directly to clients. This is the biggest scope by far. It means you are building agent runtime behavior, not just trace infrastructure.

**What I would recommend**
If you want Traces to “become an agent,” I would not start with the full native agent. I’d start with the proxy/router shape.

That gives you the strongest upside:
- one stable ACP surface for clients
- compatibility with existing ACP agents you already support
- exact trace capture from live session updates
- easier context injection than today’s adapter/skill/env-hint approach
- a path to make Traces the control plane for multi-agent sessions

**Concretely, that would look like**
- Add `traces acp serve` as a stdio ACP agent entrypoint.
- Implement `initialize`, `session/new`, `session/prompt`, and `session/update` streaming first.
- Persist raw ACP envelopes, not just the current flattened event model in [types.ts](/Users/tarunsachdeva/code/traces/cli/src/types.ts#L28). Plans, permissions, command lists, and richer tool lifecycle will otherwise be lost.
- For each Traces session, optionally spawn an upstream ACP agent and bridge updates through.
- Always inject a Traces MCP server so the upstream agent can query prior traces, related code history, and share/publish tools. That aligns with the MCP direction already noted in [docs/git-integration.md](/Users/tarunsachdeva/code/traces/docs/git-integration.md#L157).
- Keep file/db adapters as fallback for runtimes Traces did not launch.

**The key product question**
Do you want Traces to be:
- a memory/tool for other agents, or
- the runtime boundary that users actually talk to?

If it’s the first, MCP server + ACP client is enough.
If it’s the second, ACP agent makes sense, and the proxy/router version is the highest-leverage first move.

Net: yes, Traces could absolutely become an ACP agent. The most sensible first version is not “build our own coding model runtime,” but “become a trace-aware ACP session broker that fronts existing agents and makes Traces first-class inside every session.”

## User

# AGENTS.md instructions for /Users/tarunsachdeva/code/traces

<INSTRUCTIONS>
# Agent Instructions

## Package Manager
- **Bun** everywhere: `bun install`, `bun run dev`
- **Convex CLI**: `bunx convex dev`, `bunx convex deploy`

## Commit Attribution
AI commits MUST include:
```
Co-Authored-By: (the agent model's name and attribution byline)
```

## Project Structure
```
traces/
├── api/          # Convex backend (see api/AGENTS.md)
├── cli/          # Bun CLI TUI (see cli/AGENTS.md)
├── frontend/     # Next.js app (see frontend/AGENTS.md)
├── packages/
│   └── shared/   # @traces/shared types
└── docs/         # Architecture docs (reference only)
```

## Managing Projects

- MUST: Core project outline and purpose always clear
- MUST: Start at lowest level - API, Types before frontend
- MUST: Clear atomic checklist items
- MUST: Phases should be committable and reversible
- NEVER: Commit without asking
- NEVER: Change API, CLI, Frontend all at once unless permitted
- SHOULD: Keep project plan updated

## Writing Tests

- MUST: Write cleanup functions for every test
- MUST: Test behavior, not code structure
- MUST: Use simple, easy-to-understand names

## Defining Types

- MUST: Use `@traces/shared` for shared types
- Reference: `docs/types.md`

## Shared Package (`@traces/shared`)

The `packages/shared/` package provides types consumed by both `api/` and `frontend/`.

**Two type generation pipelines:**
1. **OpenAPI types** (`bun run generate:api` in `packages/shared/`) — generates REST API types from `openapi.json`
2. **Convex query types** (`bun run generate:convex` in `packages/shared/`) — generates typed function references from the running Convex backend via `convex-helpers ts-api-spec`

**Convex return types:** When a Convex query/mutation has a `returns` validator, `ts-api-spec` generates a typed return type. Without `returns`, the return type is `any`.
- MUST: Add `returns` validators to public queries so the frontend gets type safety
- Run `bun run generate:convex` (requires local Convex backend running) after changing query signatures
- Run `bun run build` in `packages/shared/` to compile the types
- The `watch-convex.ts` dev script auto-regenerates on file changes during development

## Deployment

### CI/CD Workflows (`.github/workflows/`)

| Workflow | Trigger | What it does |
|----------|---------|-------------|
| `api-deploy.yml` | Push to `main` when `api/**` changes | Deploy Convex + run migrations + run backfills |
| `api-tests.yml` | PR / push | Run API test suite |
| `ci.yml` | PR / push | General CI checks |
| `release-cli.yml` | Release tag | Build + publish CLI binaries |

### API Deploy Pipeline (`api-deploy.yml`)

On push to `main` with `api/**` changes:
1. `bunx convex deploy` — pushes functions + schema to production Convex
2. `bunx convex run internal/migrations:run` — runs framework migrations (tracked, idempotent)
3. Backfill migrations (currently none pending — add new ones to the "Run backfill migrations" step as needed, and remove completed ones once they've run on main)

**Key:** The workflow only triggers on `api/**` path changes. Changes to `.github/workflows/`, `frontend/`, or `packages/` alone will NOT trigger a deploy.

### Adding New Migrations

- Framework migrations: Add to the `run` runner array in `internal/migrations.ts`
- Backfill migrations: Add as `internalMutation` with pagination + self-scheduling, then add to the "Run backfill migrations" step in `api-deploy.yml`
- MUST: All migrations must be idempotent (safe to run repeatedly)
- Manual-only migrations (e.g., `backfillTraceSummaries`) should NOT be added to the deploy workflow

## Architecture Docs

| Doc | Purpose |
|-----|---------|
| `docs/api.md` | REST API reference, data model, rate limiting |
| `docs/auth.md` | Auth architecture, token types, OAuth flows |
| `docs/cli.md` | CLI data flow, events vs messages, SQLite migrations |
| `docs/frontend.md` | Frontend architecture, routes, auth integration, message rendering |
| `docs/types.md` | Shared types reference (`@traces/shared`) |
| `docs/adding-agents.md` | Guide for adding new agent adapters |
| `docs/scheduled-jobs.md` | Pattern for adding post-processing jobs |
| `docs/convex-update-runbook.md` | How to upgrade the self-hosted Convex backend + npm package |
| `docs/git-integration.md` | Git notes hook, CLI discovery, trace sync, GitHub App design |

## Skills

| Skill | Path |
|-------|------|
| Convex Self-Hosted Updates | `.agents/skills/convex-self-hosted-updates/` |


## Skills
A skill is a set of local instructions to follow that is stored in a `SKILL.md` file. Below is the list of skills that can be used. Each entry includes a name, description, and file path so you can open the source for full instructions when using a specific skill.
### Available skills
- agents-md: This skill should be used when the user asks to "create AGENTS.md", "update AGENTS.md", "maintain agent docs", "set up CLAUDE.md", or needs to keep agent instructions concise. Guides discovery of local skills and enforces minimal documentation style. (file: /Users/tarunsachdeva/code/traces/.agents/skills/agents-md/SKILL.md)
- convex: Umbrella skill for all Convex development patterns. Routes to specific skills like convex-functions, convex-realtime, convex-agents, etc. (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex/SKILL.md)
- convex-best-practices: Guidelines for building production-ready Convex apps covering function organization, query patterns, validation, TypeScript usage, error handling, and the Zen of Convex design philosophy (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-best-practices/SKILL.md)
- convex-cron-jobs: Scheduled function patterns for background tasks including interval scheduling, cron expressions, job monitoring, retry strategies, and best practices for long-running tasks (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-cron-jobs/SKILL.md)
- convex-functions: Writing queries, mutations, actions, and HTTP actions with proper argument validation, error handling, internal functions, and runtime considerations (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-functions/SKILL.md)
- convex-migrations: Schema migration strategies for evolving applications including adding new fields, backfilling data, removing deprecated fields, index migrations, and zero-downtime migration patterns (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-migrations/SKILL.md)
- convex-schema-validator: Defining and validating database schemas with proper typing, index configuration, optional fields, unions, and migration strategies for schema changes (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-schema-validator/SKILL.md)
- convex-security-audit: Deep security review patterns for authorization logic, data access boundaries, action isolation, rate limiting, and protecting sensitive operations (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-security-audit/SKILL.md)
- convex-security-check: Quick security audit checklist covering authentication, function exposure, argument validation, row-level access control, and environment variable handling (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-security-check/SKILL.md)
- convex-self-hosted-updates: Upgrade the self-hosted Convex backend Docker image and the `convex` npm package. Use when asked to "update Convex", "upgrade the Convex backend", "bump the Convex image", or "check for Convex updates". Handles both the Docker image in api/docker-compose.yml and the npm package across all packages — always updated together in one PR. (file: /Users/tarunsachdeva/code/traces/.agents/skills/convex-self-hosted-updates/SKILL.md)
- git-worktree: Create and manage git worktrees for parallel development with automatic env file symlinking. Use when the user asks to "create a worktree", "work on a branch in parallel", "set up a new worktree", "check out a branch separately", or needs to run multiple branches simultaneously without stashing. Triggers on tasks involving parallel branch work, isolated development environments, or worktree management. (file: /Users/tarunsachdeva/code/traces/.agents/skills/git-worktree/SKILL.md)
- next-best-practices: Next.js best practices - file conventions, RSC boundaries, data patterns, async APIs, metadata, error handling, route handlers, image/font optimization, bundling (file: /Users/tarunsachdeva/code/traces/.agents/skills/next-best-practices/SKILL.md)
- skill-creator: Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations. (file: /Users/tarunsachdeva/code/traces/.agents/skills/skill-creator/SKILL.md)
- ui-guidelines: UI accessibility and interaction guidelines for building accessible, fast, delightful UIs. Use when building React components, handling form interactions, animations, layouts, or reviewing UI code. Triggers on tasks involving keyboard accessibility, touch targets, form validation, animations, dark mode, or content handling. (file: /Users/tarunsachdeva/code/traces/.agents/skills/ui-guidelines/SKILL.md)
- upgrade-deps: Dependency upgrade planning and runbooks for the Traces monorepo, including Vercel preview validation. Use when asked to assess dependency updates, plan upgrades, write runbooks, or when someone says "use the upgrade-deps skill to see where we are at". (file: /Users/tarunsachdeva/code/traces/.agents/skills/upgrade-deps/SKILL.md)
- vercel-composition-patterns: React composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes. (file: /Users/tarunsachdeva/code/traces/.agents/skills/vercel-composition-patterns/SKILL.md)
- vercel-react-best-practices: React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements. (file: /Users/tarunsachdeva/code/traces/.agents/skills/vercel-react-best-practices/SKILL.md)
- web-design-guidelines: Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices". (file: /Users/tarunsachdeva/code/traces/.agents/skills/web-design-guidelines/SKILL.md)
- share-to-traces: Share the current coding session to Traces and return the share URL. (file: /Users/tarunsachdeva/.agents/skills/share-to-traces/SKILL.md)
- skill-creator: Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations. (file: /Users/tarunsachdeva/.codex/skills/.system/skill-creator/SKILL.md)
- skill-installer: Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos). (file: /Users/tarunsachdeva/.codex/skills/.system/skill-installer/SKILL.md)
### How to use skills
- Discovery: The list above is the skills available in this session (name + description + file path). Skill bodies live on disk at the listed paths.
- Trigger rules: If the user names a skill (with `$SkillName` or plain text) OR the task clearly matches a skill's description shown above, you must use that skill for that turn. Multiple mentions mean use them all. Do not carry skills across turns unless re-mentioned.
- Missing/blocked: If a named skill isn't in the list or the path can't be read, say so briefly and continue with the best fallback.
- How to use a skill (progressive disclosure):
  1) After deciding to use a skill, open its `SKILL.md`. Read only enough to follow the workflow.
  2) When `SKILL.md` references relative paths (e.g., `scripts/foo.py`), resolve them relative to the skill directory listed above first, and only consider other paths if needed.
  3) If `SKILL.md` points to extra folders such as `references/`, load only the specific files needed for the request; don't bulk-load everything.
  4) If `scripts/` exist, prefer running or patching them instead of retyping large code blocks.
  5) If `assets/` or templates exist, reuse them instead of recreating from scratch.
- Coordination and sequencing:
  - If multiple skills apply, choose the minimal set that covers the request and state the order you'll use them.
  - Announce which skill(s) you're using and why (one short line). If you skip an obvious skill, say why.
- Context hygiene:
  - Keep context small: summarize long sections instead of pasting them; only load extra files when needed.
  - Avoid deep reference-chasing: prefer opening only files directly linked from `SKILL.md` unless you're blocked.
  - When variants exist (frameworks, providers, domains), pick only the relevant reference file(s) and note that choice.
- Safety and fallback: If a skill can't be applied cleanly (missing files, unclear instructions), state the issue, pick the next-best approach, and continue.
</INSTRUCTIONS>
<environment_context>
  <cwd>/Users/tarunsachdeva/code/traces</cwd>
  <shell>zsh</shell>
  <current_date>2026-03-16</current_date>
  <timezone>America/Toronto</timezone>
</environment_context>

## User

Please look at :

https://agentclientprotocol.com/get-started/introduction
https://agentclientprotocol.com/protocol/overview

This feels like a protocol we should support or leverage in some way for sure for Traces in our CLI. Give me an overview of ACP and suggest how we should be using it in our adapter architecture.

## Assistant

I’m reviewing the ACP docs you linked and the Traces adapter architecture in the repo so I can ground the recommendation in how the CLI actually works today.

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "rg --files cli api packages/shared docs | rg 'AGENTS.md$|adding-agents|cli\\.md|adapter|agent'",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "git status --short",
  "max_output_tokens": 1000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: a0ad32
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 369
Output:
api/AGENTS.md
docs/adding-agents.md
docs/projects/amp-adapter.md
docs/projects/copilot-adapter.md
docs/cli.md
api/convex/services/agents.ts
packages/shared/src/agent.ts
api/convex/http/v1/agents.ts
api/convex/internal/agents.ts
cli/src/adapters/opencode/v1.ts
cli/src/adapters/opencode/v2.ts
cli/src/adapters/hermes/v1.ts
cli/src/adapters/hermes/v1.test.ts
cli/src/adapters/index.ts
cli/src/adapters/adapter.ts
api/tests/v1/agent-attribution.test.ts
cli/src/adapters/amp/v1.ts
cli/src/adapters/gemini-cli/index.ts
cli/src/adapters/gemini-cli/v1.ts
cli/AGENTS.md
cli/src/adapters/pi/v1.ts
cli/src/adapters/shared/diagnostics.ts
cli/src/adapters/shared/history-reader.ts
cli/src/adapters/shared/discovery-utils.ts
cli/test/helpers/adapter-validation.ts
cli/src/adapters/codex/v1.ts
cli/src/adapters/index.test.ts
cli/src/adapters/claude-code/v1.ts
cli/src/adapters/cursor/v1.ts
cli/src/adapters/cline/v1.ts
cli/src/adapters/copilot/v1.ts
cli/test/core/adapters.test.ts
cli/test/core/adapters-watcher.test.ts
cli/test/fixture/pi/agent/sessions/--Users-tarunsachdeva-code-traces--/2026-02-14T03-06-41-189Z_d59ba170-7f32-4ba4-94a1-c58570ba91cc.jsonl
cli/test/fixture/pi/agent/sessions/--Users-tarunsachdeva-code-traces--/2026-02-14T03-00-00-000Z_11111111-1111-4111-8111-111111111111.jsonl
cli/test/fixture/cursor/projects/test-project/agent-transcripts/nested-session-001/nested-session-001.jsonl
cli/test/fixture/cursor/projects/test-project/agent-transcripts/legacy-session.json

```

## Assistant

**Result** (success):
```
Chunk ID: 53c68a
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 0
Output:

```

## Assistant

I’ve got the ACP protocol shape. Next I’m mapping it onto Traces’ existing adapter model so the recommendation is concrete rather than generic.

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,220p' cli/AGENTS.md",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,260p' docs/adding-agents.md",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,260p' docs/cli.md",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,260p' cli/src/adapters/adapter.ts",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: 013f0f
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 956
Output:
# CLI Agent Instructions

## Stack
- Bun runtime
- OpenTUI + Solid.js (Terminal UI)
- SQLite (local storage)
- better-sqlite3

### OpenTUI Reference

Primitives: `box`, `text`, `span`, `scrollbox`, `input`, `select`, `code`, `textarea`, `markdown`, `tab_select`, `ascii_font`

Hooks: `useKeyboard()`, `useTerminalDimensions()`, `useRenderer()`, `onResize()`, `usePaste()`, `useSelectionHandler()`, `useTimeline()`

Focus: `focusable` property, `focus()`, `blur()`, `FOCUSED`/`BLURRED` events

## Commands

| Command | Description |
|---------|-------------|
| `bun install` | Install deps |
| `bun run dev` | Dev with local backend |
| `bun run prod` | Dev with prod backend |
| `bun test` | Run tests |
| `bun run reset:dev` | Reset dev environment |

## Architecture

```
TUI -> SessionController -> Session -> Adapters -> Storage
```

- MUST: TUI only calls SessionController
- MUST: Only SessionController accesses adapters
- MUST: EventStore for metadata + sync cache only
- NEVER: Read adapters from TUI directly
- NEVER: Use EventStore for detail view content

Reference: `docs/cli.md` for full architecture

## File Structure

```
cli/src/
├── tui/           # OpenTUI + Solid.js TUI
├── core/          # Session, Controller, Migrations
├── adapters/      # Agent adapters (claude-code, cursor, etc.)
├── services/      # API client, clipboard, updates
└── types.ts       # CLI-specific types
```

## Events vs Messages

- CLI uses events internally (flat, event-sourced)
- API uses messages + parts (relational)
- Transform happens at sync boundary (`src/services/api.ts`)

```
CLI (events) -> transform() -> API (messages+parts)
```

## SQLite Migrations

- Schema version: `PRAGMA user_version`
- Migrations in `src/core/migrations.ts`
- Each migration runs in transaction

```typescript
{
  version: 2,
  name: 'add_new_column',
  up: (db: Database) => {
    db.exec('ALTER TABLE traces ADD COLUMN new_field TEXT');
  },
}
```

## Adding New Agent Adapters

Reference: `docs/adding-agents.md`

1. Add agent ID to `@traces/shared` and `cli/src/types.ts`
2. Create adapter in `cli/src/adapters/<agent>/v1.ts`
3. Register in `cli/src/adapters/index.ts`

### Adapter Test Fixtures

- Fixtures MUST track real-world formats as they evolve, otherwise adapter tests can be green but stale.
- Use versioned, minimal golden fixtures per adapter (normal + edge cases) and update them when upstream formats change.
- Keep fixtures sanitized and small, but representative: tool calls/results, reasoning, malformed lines, empty sessions, and timestamp/order quirks.
- When a production adapter bug is found, add the exact anonymized sample as a regression fixture before fixing code.
- Periodically refresh fixtures from current agent versions to avoid fixture drift.

## Memory Management

The CLI runs as a long-lived TUI process. These rules prevent unbounded memory growth:

- MUST: Override `count()` on every adapter — default loads full trace content
- MUST: Use `lastEventCount` integer, not `Set<string>` seenEventIds in `subscribe()`
- MUST: Check file mtime before expensive re-reads in polling subscriptions
- MUST: Call `closeDetailView()` (not manual state resets) when leaving detail view
- MUST: Bound any in-memory caches (Maps, Sets) with LRU eviction
- NEVER: Store raw request/response body objects in history — truncate to string
- NEVER: Copy forward stale Map entries across refresh cycles without pruning

### Monitoring

- Memory gauges emitted to Sentry every 60s: `cli.memory.rss_mb`, `cli.memory.heap_used_mb`, `cli.memory.growth_rate_mb_per_min`
- Sentry warnings at 512MB RSS (`cli.memory_warning`) and 1GB (`cli.memory_critical`)
- Diagnostics overlay (Ctrl+D) shows memory snapshot

Reference: See PR #236 for the full memory leak investigation and fixes.

```

## Assistant

**Result** (success):
```
Chunk ID: a433b2
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1925
Output:
# Adding a New Agent

This guide explains how to add support for a new coding agent to Traces.

## Overview

Adding a new agent requires changes in three places:
1. **@traces/shared** - Add the agent ID to the canonical type
2. **CLI** - Create an adapter that knows how to read the agent's session files
3. **Agent skills/instructions** - Ensure `share-to-traces` is available via central skills registry

## Step 1: Add Agent ID to Shared Types

Edit `packages/shared/src/agent.ts`:

```typescript
export type AgentId =
  | 'claude-code'
  | 'cursor'
  | 'opencode'
  | 'codex'
  | 'gemini-cli'
  | 'pi'
  | 'amp'
  | 'your-new-agent';  // Add here
```

Build the shared package:

```bash
cd packages/shared && bun run build
```

## Step 2: Create the Adapter

Create a new directory and adapter file:

```
cli/src/adapters/your-new-agent/
└── v1.ts
```

Implement the adapter by extending `BaseAdapter`:

```typescript
import { BaseAdapter } from '../adapter.js';
import type { SessionMetadata, SessionContent, SessionEvent, EnvironmentDetails } from '../../types.js';

export class YourNewAgentAdapter extends BaseAdapter {
  readonly agentId = 'your-new-agent' as const;

  /**
   * Return paths to watch for new/updated sessions.
   * These are typically in the user's home directory.
   */
  getWatchPaths(): string[] {
    return [
      path.join(os.homedir(), '.your-agent', 'sessions'),
    ];
  }

  /**
   * Discover all sessions from the agent's storage.
   * Return metadata for each session found.
   */
  async discoverSessions(): Promise<SessionMetadata[]> {
    // Read session files and return metadata
  }

  /**
   * Get the full content of a session (all events).
   */
  async getSessionContent(session: SessionMetadata): Promise<SessionContent> {
    // Parse session file and convert to events
  }

  /**
   * Get environment details (project path, timestamps).
   */
  async getEnvironmentDetails(session: SessionMetadata): Promise<EnvironmentDetails> {
    // Extract from session metadata or content
  }
}
```

### Key Methods

| Method | Purpose |
|--------|---------|
| `getWatchPaths()` | Directories to monitor for changes |
| `discoverSessions()` | Find all sessions and return metadata |
| `getSessionContent()` | Parse session file into events |
| `getEnvironmentDetails()` | Extract project context |

### Efficient `count()` Override (Required)

The default `count()` calls `getTraceContent()` which loads all events into memory. Since `count()` runs on a 4-second refresh interval for every changed trace, this is a major memory leak for long-running sessions.

**Every adapter MUST override `count()`** with a lightweight implementation:

```typescript
// JSONL-based adapters: count non-empty lines
async count(trace: TraceMetadata): Promise<number> {
  const content = await fs.promises.readFile(sourcePath, 'utf-8');
  let count = 0;
  for (const line of content.split('\n')) {
    if (line.trim()) count++;
  }
  return count;
}

// SQLite-based adapters: use SQL COUNT
private countEvents(sessionId: string): number | null {
  return this.withSqliteDb((db) => {
    const row = db.query('SELECT COUNT(*) AS c FROM message WHERE session_id = ?').get(sessionId);
    return row?.c ?? 0;
  });
}
```

### Memory-Safe `subscribe()` Patterns

The `subscribe()` method runs for the lifetime of a shared trace or an open detail view. Follow these rules:

1. **Use `lastEventCount` instead of `seenEventIds`** — A `Set<string>` of event IDs grows monotonically and is never pruned. Use an integer count with `events.slice(lastEventCount)` instead.

2. **Add change detection before re-reading** — For polling-based subscriptions, check file mtime/size before doing an expensive full content read:
   ```typescript
   let lastMtimeMs = fs.statSync(dbPath).mtimeMs;
   // in poll loop:
   const currentMtime = fs.statSync(dbPath).mtimeMs;
   if (currentMtime === lastMtimeMs) continue; // skip expensive read
   ```

3. **Prefer incremental reads** — The Claude Code adapter's offset-based JSONL reader is the gold standard: it only reads new bytes appended since the last check. Use this pattern when the storage format supports it.

4. **Bound any caches** — If the adapter caches resolved paths or other data, add LRU eviction (e.g., delete the oldest Map entry when size exceeds 500).

### Event Types

Convert the agent's native format to these event types:

- `user_message` - User input
- `agent_text` - Agent response text
- `agent_thinking` - Chain of thought / reasoning
- `tool_call` - Tool invocation
- `tool_result` - Tool output
- `error` - Error messages

## Step 3: Register the Adapter

Edit `cli/src/adapters/index.ts`:

```typescript
import { YourNewAgentAdapter } from './your-new-agent/v1.js';

// In initializeAdapters():
registry.register(new YourNewAgentAdapter());
```

Export the adapter:

```typescript
export { YourNewAgentAdapter } from './your-new-agent/v1.js';
```

## Step 4: Update CLI Types

The CLI maintains its own `AgentId` type in `cli/src/types.ts` (it includes additional type-only IDs like `windsurf`, `copilot`, `manual` that aren't in `@traces/shared`). Add your new agent there too:

```typescript
export type AgentId =
  | 'claude-code'
  | 'cursor'
  | 'opencode'
  | 'codex'
  | 'gemini-cli'
  | 'pi'
  | 'amp'
  | 'your-new-agent';  // Add here too
```

## Step 5: Install Share Skill via Traces CLI (Required)

New adapters must ensure the central `share-to-traces` skill is installed for the runtime.

```bash
traces setup
# or: traces setup skills
```

Install for a specific runtime only:

```bash
traces setup skills --agent <agent-id>
```

Remove installed skills when needed:

```bash
traces remove skills
# or: traces remove skills --global
```

Use per-agent wrappers only if a runtime cannot consume the shared skill directly.

### Required skill behavior

- Trigger phrases:
  - `share to traces`
  - `publish this trace`
  - `share this session`
- Canonical command:

```bash
traces share --cwd "$PWD" --agent <agent-id> --json
```

- Prefer exact current-session hints when available:

```bash
TRACES_CURRENT_TRACE_ID="<id>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
TRACES_CURRENT_SOURCE_PATH="<path>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
```

- Fallback selector only when exact current-session context is unavailable:

```bash
traces share --cwd "$PWD" --agent <agent-id|auto> --json
```

- Error mapping:
  - `AUTH_REQUIRED` -> ask user to run `traces login`
  - `TRACE_NOT_FOUND` -> suggest explicit selector
  - `INVALID_ARGUMENTS` -> show one-line usage hint
  - `UPLOAD_FAILED` -> suggest retry

### Adapter completion rule

An adapter is not complete until:

- adapter discovery/parsing works,
- sync works,
- central `share-to-traces` skill is installed,
- skill prefers exact current-session hint (`TRACES_CURRENT_TRACE_ID` or `TRACES_CURRENT_SOURCE_PATH`) before cwd fallback,
- trigger phrase is manually verified,
- skill returns URL from `traces share ... --json`.

## Testing

1. Run CLI tests: `cd cli && bun test`
2. Manual test: `traces` should discover sessions from the new agent
3. Verify sync: Sessions should upload and display correctly in the frontend
4. Verify installed share skill can execute `traces share --cwd "$PWD" --agent <agent-id> --json` and return URL

### Sandbox caveats (local dev)

- Some agent sandboxes cannot write `~/.traces`; set `TRACES_EVENTSTORE=/tmp/traces-share.db` for testing.
- Some sandboxes cannot access local endpoints (for example `http://localhost:3211`) without elevated permissions.
- If share fails with connectivity in a sandbox, rerun with escalation or run from your normal terminal.

```

## Assistant

**Result** (success):
```
Chunk ID: 1285de
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 2621
Output:
# CLI Architecture

The Traces CLI follows a strict flow: **TUI -> Controller -> Model -> Adapters**.

## CLI Commands

```
traces [command]

Commands:
  (no command)  Open the TUI to browse traces
  list          Print traces without opening TUI
  login         Authenticate with GitHub
  logout        Clear local credentials
  whoami        Show current login status
  namespace     Manage namespaces (list, switch)
  status        Show local database and auth status
  doctor        Diagnose installation issues
  reset         Remove local database to force resync
  share         Publish a trace from CLI
  setup         Install Traces skills for supported agents
  remove        Remove Traces skills from supported agents
  upgrade       Update to latest version
  uninstall     Remove traces binary
  version       Show version number
  help          Show this help message

Options:
  list --limit N              Limit output rows (default: 100)
  list --agent ID             Filter by agent ID
  list --json                 Print machine-readable JSON
  list --diagnostics          Include timing diagnostics
  login --no-browser          Print auth URL instead of opening browser
  namespace list              List your namespaces
  namespace use <slug>        Switch active namespace
  share --trace-id ID         Share specific trace by ID
  share --source-path PATH    Share trace at specific file path
  share --cwd DIR             Set working directory for discovery
  share --agent ID            Filter by agent ID
  share --visibility MODE     Set visibility (private, direct, public)
  share --key TOKEN           Use bearer token/API key instead of local login (or set TRACES_API_KEY)
  share --json                Print machine-readable JSON output
  share --follow              Keep syncing after initial upload
  share --list                List available traces for selection
  setup [skills] --yes        Skip confirmation prompts
  setup [skills] --agent ID,...  Install for specific agents only
  setup [skills] --global     Install globally (not per-project)
  setup [skills] --json       Print machine-readable JSON output
  remove skills --yes         Skip confirmation prompt
  remove skills --global      Remove from home directory
  remove skills --json        Print machine-readable JSON output
  reset --force, -f           Skip confirmation prompt
  reset --all, -a             Also clear credentials (logout)

Debug:
  --debug PATH                Write debug log to PATH (works with any command)
```

### Skills setup and removal

Use these commands to manage Traces skills integration:

```bash
# Install skills in the current project
traces setup

# Equivalent explicit target
traces setup skills

# Install for specific agents only
traces setup skills --agent codex,cursor

# Remove skills from the current project
traces remove skills

# Remove globally from your home directory
traces remove skills --global
```

Notes:
- `traces setup` currently maps to `traces setup skills`.
- `traces setup git` and `traces remove git` are reserved but not yet available.

### Troubleshooting

**Database corruption**: If the TUI shows errors or traces don't load correctly, run:
```bash
traces reset
```
This deletes the local SQLite database and forces a full resync on next launch.

**Diagnose issues**: Run the doctor command to check installation, database, network, and auth:
```bash
traces doctor
```

**Check current status**: View database size, trace count, and auth status:
```bash
traces status
```

**Debug logging**: Pass `--debug <path>` to write a timestamped log of internal events (keypresses, state changes, errors). The flag can appear anywhere in the command and works with all subcommands:
```bash
traces --debug /tmp/traces-debug.log
traces share --trace-id abc123 --debug /tmp/share-debug.log
```

## Supported Agents

| Agent ID | Adapter | Storage Format | Storage Location |
|----------|---------|---------------|-----------------|
| `claude-code` | `ClaudeCodeAdapter` | JSONL | `~/.claude/` |
| `cursor` | `CursorAdapter` | SQLite + legacy JSON | `~/Library/Application Support/Cursor/` |
| `opencode` | `OpenCodeAdapter` | SQLite + legacy JSON | `~/.local/share/opencode/` |
| `codex` | `CodexAdapter` | JSONL + JSON | `~/.codex/` |
| `gemini-cli` | `GeminiCliAdapter` | JSON | `~/.gemini/tmp/` |
| `pi` | `PiAdapter` | JSONL | `~/.pi/agent/sessions/` |
| `amp` | `AmpAdapter` | JSON | `~/.local/share/amp/threads/` |

Type-only IDs (no adapter): `windsurf`, `copilot`, `manual`.

## Data Flow

```
┌──────────────────────────┐
│          TUI             │
│  src/tui/app.tsx         │
└────────────┬─────────────┘
             │
             ▼
┌──────────────────────────┐
│     TraceController      │
│  src/core/trace-         │
│  controller.ts           │
└────────────┬─────────────┘
             │
             ▼
┌──────────────────────────┐
│      Trace (Model)       │
│  src/core/trace.ts       │
└────────────┬─────────────┘
             │
             ▼
┌──────────────────────────┐
│         Adapters         │
│   src/adapters/*         │
└────────────┬─────────────┘
             │
             ▼
┌──────────────────────────┐
│ Agent storage (files,    │
│ sqlite, jsonl, etc.)     │
└──────────────────────────┘
```

## Roles and boundaries

**TUI (View)**
- Only calls methods on `TraceController`.
- Never reads adapters directly.
- Never touches EventStore for detail view data.

**TraceController (Controller)**
- Single entry point for UI actions.
- Merges adapter traces with EventStore metadata.
- Creates `Trace` models for content reads.
- Owns subscription lifecycle for live updates.

**Trace (Model)**
- Wraps adapter + store for a single trace.
- `getContent()` delegates to adapter.
- Stores metadata changes in EventStore when needed.

**Adapters (Data source)**
- Parse agent storage into `TraceContent` + `TraceEvent`.
- Provide live updates via `subscribe()`.
- No persistence responsibilities.

**EventStore (Persistence)**
- Stores trace metadata + shared state.
- Acts as a sync cache for shared traces only.
- Not used for detail view content.

**TraceIndexer (Discovery)**
- Background service for incremental trace discovery.
- Uses cursor-based scanning to avoid redundant work.
- Stores index state in the `indexes` SQLite table per adapter.
- Supports history-first discovery (scan from tail of JSONL files).

**Services**
- API client, clipboard, updates, request history.
- Called by the controller or TUI when needed.

## Rules of access

- **TUI never calls adapters directly.**
- **Only TraceController may access adapters.**
- EventStore is for **metadata + sync cache**, not UI detail rendering.

## Empty Session Guards

Sessions can end up with 0 events for legitimate reasons (e.g. JSONL files containing only metadata entries like `summary` or `file-history-snapshot`). To prevent these from being shared as empty traces, guards exist at three layers:

| Layer | File | Behavior |
|-------|------|----------|
| **TUI** | `src/tui/hooks/useAppState.ts` | Shows user-friendly error before share attempt; retries hydration up to 3 times in case the adapter hasn't finished parsing |
| **Controller** | `src/core/trace-controller.ts` | `performShare` rejects with a structured error if content has 0 events after adapter returns |
| **API client** | `src/services/api.ts` | `backfillTrace` bails early with a warning if the transformed message list is empty, preventing a server round-trip |

These guards are defense-in-depth -- any single layer is sufficient to prevent an empty trace from reaching the server. Adapters do **not** need to implement their own empty-session guard; they should parse honestly and populate the `ParseDiagnostics` object passed by `BaseAdapter.getTraceContent()` to report what was skipped or unrecognized. Diagnostics are emitted to Sentry structured logs (`cli.adapter.empty_parse`, `cli.adapter.unhandled_types`).

See `docs/adding-agents.md` "Parse Diagnostics" section for adapter-level guidance.

## Remote Config

The CLI fetches remote configuration from `${TRACES_URL}/config.json` on startup. This allows server-side overrides without CLI updates:

| Key | Default | Description |
|-----|---------|-------------|
| `sessionListLimit` | 200 | Max traces shown in TUI |
| `largeSessionWarningThreshold` | 10000 | Warn before sharing large traces |
| `readOnlyMode` | false | Disable all write operations |
| `maxEventBytes` | 524288 | Max bytes per single event upload |
| `maxBatchBytes` | 4194304 | Max bytes per batch upload |
| `maxBatchItems` | 50 | Max messages per batch |

## Credentials storage

The CLI stores credentials in the OS config directory (XDG on Linux, Application Support on macOS, AppData on Windows).
Credential files are **per server URL** and saved as `credentials-<hash>.json` alongside `device.json`.

## Events vs Messages

**CLI uses events internally, API uses messages+parts.**

```
CLI (events)  ->  transform()  ->  API (messages+parts)
                      ^
               uses @traces/shared types
```

| Layer | Internal Model | Tables |
|-------|---------------|--------|
| CLI | Event-sourced (flat) | `traces`, `events`, `indexes` |
| API | Relational (grouped) | `traces`, `messages`, `parts` |

**Why CLI uses events:**
- Events match how adapters parse trace files (line by line)
- Flat event stream preserves exact order/timing
- Transformation to messages is simple and happens at sync boundary
- High migration cost for low benefit if we changed CLI schema

**CLI event types** (`src/types.ts`):
- `user_message`, `agent_text`, `agent_thinking`
- `tool_call`, `tool_result`, `error`

**Sync boundary:**
- CLI transforms events -> messages when calling API
- Uses `@traces/shared` types (`Message`, `Part`, `PartType`)
- Transform logic lives in `src/services/api.ts`

```

## Assistant

**Result** (success):
```
Chunk ID: a7ae75
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1843
Output:
/**
 * Base adapter interface for reading traces from different agents
 *
 * Each adapter implements this interface to provide a consistent way
 * to discover and read traces from their respective agent's storage.
 */

import type { AgentId, TraceMetadata, TraceContent, AdapterConfig, TraceEvent, EnvironmentDetails } from '../types.js';
import {
  isCommandLike as sharedIsCommandLike,
  normalizeTitleCandidate as sharedNormalizeTitleCandidate,
  truncateText as sharedTruncateText,
} from './shared/discovery-utils.js';
import { createDiagnostics, emitDiagnostics, emitAvailability, emitAdapterError, type ParseDiagnostics } from './shared/diagnostics.js';

export type { ParseDiagnostics } from './shared/diagnostics.js';

export type CurrentTraceHint = {
  traceId?: string;
  sourcePath?: string;
  timestamp?: number;
};

export type TraceIndexCursor = Record<string, unknown>;

export type TraceIndexBatch = {
  traces: TraceMetadata[];
  nextCursor: TraceIndexCursor;
  done: boolean;
};

/**
 * Interface that all trace adapters must implement
 */
export interface TraceAdapter {
  /**
   * Unique identifier for this adapter (matches AgentId)
   */
  readonly id: AgentId;

  /**
   * Human-readable name for the agent
   */
  readonly name: string;

  /**
   * Check if this adapter is available on the current system
   * (e.g., checks if the agent's data directory exists)
   */
  isAvailable(): Promise<boolean>;

  /**
   * Get traces from this adapter
   */
  getTraces(options?: { agentId?: AgentId; limit?: number }): Promise<TraceMetadata[]>;

  /**
   * Get the full content of a specific trace
   * @param trace The trace metadata (from getTraces)
   * @returns The full trace content with all messages
   */
  getTraceContent(trace: TraceMetadata): Promise<TraceContent>;

  /**
   * Get environment details for a trace (derived from content)
   */
  getEnvironmentDetails(trace: TraceMetadata): Promise<EnvironmentDetails>;

  /**
   * Subscribe to trace events as they occur
   */
  subscribe(
    trace: TraceMetadata,
    onEvent: (event: TraceEvent) => void
  ): Promise<() => void>;

  /**
   * Get the event count for a trace (lightweight alternative to getTraceContent)
   */
  count(trace: TraceMetadata): Promise<number>;

  /**
   * Optional hint for the active/foreground trace in the current agent runtime.
   * Used to improve `traces share` selection when multiple traces exist.
   */
  getCurrentTraceHint?(cwd?: string): Promise<CurrentTraceHint | null>;

  /**
   * Optional incremental discovery API for indexers.
   */
  getTraceIndexBatch?(options?: { limit?: number; cursor?: TraceIndexCursor }): Promise<TraceIndexBatch>;

  /**
   * Adapter version identifier
   */
  getVersion(): string;
}

/**
 * Base class with common functionality for adapters
 */
export abstract class BaseAdapter implements TraceAdapter {
  abstract readonly id: AgentId;
  abstract readonly name: string;

  protected config: AdapterConfig;

  constructor(config: AdapterConfig = { enabled: true }) {
    this.config = config;
  }

  abstract isAvailable(): Promise<boolean>;
  abstract getTraces(options?: { agentId?: AgentId; limit?: number }): Promise<TraceMetadata[]>;
  abstract getEnvironmentDetails(trace: TraceMetadata): Promise<EnvironmentDetails>;

  /**
   * Parse trace content. Subclasses implement this instead of getTraceContent.
   * Populate the diagnostics object as entries are parsed.
   */
  protected abstract parseTraceContent(trace: TraceMetadata, diagnostics: ParseDiagnostics): Promise<TraceContent>;

  /**
   * Get the full content of a specific trace with automatic diagnostics.
   * Delegates to parseTraceContent and emits diagnostics on completion.
   */
  async getTraceContent(trace: TraceMetadata): Promise<TraceContent> {
    const diagnostics = createDiagnostics();
    const content = await this.parseTraceContent(trace, diagnostics);
    emitDiagnostics(this.id, trace.id, content.events.length, diagnostics, trace.sourcePath);
    return content;
  }

  async subscribe(
    trace: TraceMetadata,
    onEvent: (event: TraceEvent) => void
  ): Promise<() => void> {
    const content = await this.getTraceContent(trace);
    for (const event of content.events) {
      onEvent(event);
    }
    return () => {};
  }

  getVersion(): string {
    return 'v1';
  }

  /**
   * Default implementation - fetches full content. Override for efficiency.
   */
  async count(trace: TraceMetadata): Promise<number> {
    const content = await this.getTraceContent(trace);
    return content.events.length;
  }

  async getCurrentTraceHint(_cwd?: string): Promise<CurrentTraceHint | null> {
    return null;
  }

  /**
   * Helper to generate unique message IDs
   */
  protected generateMessageId(order: number): string {
    return `msg-${order}`;
  }

  /**
   * Helper to format a timestamp as ISO string
   */
  protected formatTimestamp(timestamp: number): string {
    return new Date(timestamp).toISOString();
  }

  /**
   * Helper to truncate text to a maximum length
   */
  protected truncateText(text: string, maxLength: number = 100): string {
    return sharedTruncateText(text, maxLength);
  }

  protected normalizeTitleCandidate(text?: string): string | null {
    return sharedNormalizeTitleCandidate(text, 100);
  }

  protected isCommandLike(text: string): boolean {
    return sharedIsCommandLike(text);
  }

  /**
   * Helper to capitalize the first letter of a string
   */
  protected capitalizeFirst(text: string): string {
    if (!text || text.length === 0) return text;
    return text.charAt(0).toUpperCase() + text.slice(1);
  }
}

/**
 * Registry of all available adapters
 */
export class AdapterRegistry {
  private adapters: Map<AgentId, TraceAdapter[]> = new Map();

  /**
   * Register an adapter
   */
  register(adapter: TraceAdapter): void {
    const list = this.adapters.get(adapter.id) ?? [];
    list.push(adapter);
    this.adapters.set(adapter.id, list);
  }

  /**
   * Get an adapter by ID
   */
  get(id: AgentId): TraceAdapter | undefined {
    const list = this.adapters.get(id);
    return list?.[0];
  }

  /**
   * Get all registered adapters
   */
  getAll(): TraceAdapter[] {
    return Array.from(this.adapters.values()).flat();
  }

  /**
   * Get all available adapters (those that are installed on the system)
   */
  async getAvailable(): Promise<TraceAdapter[]> {
    const available: TraceAdapter[] = [];
    const unavailable: string[] = [];
    for (const adapter of this.getAll()) {
      if (await adapter.isAvailable()) {
        available.push(adapter);
      } else {
        unavailable.push(adapter.id);
      }
    }
    emitAvailability(available.map(a => a.id), unavailable);
    return available;
  }

  /**
   * Get recent traces from all available adapters, merged and sorted
   */
  async getTraces(options: { agentId?: AgentId; limit?: number } = {}): Promise<TraceMetadata[]> {
    const limit = options.limit ?? 15;
    const allTraces: TraceMetadata[] = [];
    const adapters = options.agentId
      ? this.adapters.get(options.agentId) ?? []
      : await this.getAvailable();

    for (const adapter of adapters) {
      try {
        const traces = await adapter.getTraces({ agentId: adapter.id, limit });
        allTraces.push(...traces);
      } catch (error) {
        emitAdapterError(adapter.id, 'get_traces_failed', error);

```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "rg -n \"ACP|Agent Client Protocol|agentclientprotocol|MCP|protocol\" cli/src docs packages/shared",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,260p' cli/src/adapters/index.ts",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,260p' cli/src/types.ts",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: 977b01
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 202
Output:
docs/git-integration.md:162:- **MCP server**: expose trace lookup as tools so any MCP-compatible agent can query traces by ref, file, or directory
docs/convex-update-runbook.md:14:**Why together?** The `convex` npm package (`convex-js` repo) and the backend Docker image (`convex-backend` repo) are versioned independently. Convex's own setup guide recommends using `convex@latest` with the latest backend. Large version mismatches can cause protocol errors. Always update both in one PR.
cli/src/adapters/hermes/v1.ts:1014:        if (parsed.protocol !== 'file:') return undefined;
cli/src/adapters/amp/v1.ts:611:      if (parsed.protocol !== 'file:') {
cli/src/adapters/cline/v1.ts:788:        if (parsed.protocol === 'file:') {
cli/src/adapters/cursor/v1.ts:605:        if (parsed.protocol !== 'file:') {

```

## Assistant

**Result** (success):
```
Chunk ID: 62eea0
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 553
Output:
/**
 * Adapter registry and exports
 * 
 * This module exports all available adapters and initializes the registry
 */

import { registry, BaseAdapter, AdapterRegistry } from './adapter.js';
import { ClaudeCodeAdapter } from './claude-code/v1.js';
import { CursorAdapter } from './cursor/v1.js';
import { OpenCodeAdapter } from './opencode/v2.js';
import { CodexAdapter } from './codex/v1.js';
import { GeminiCliAdapter } from './gemini-cli/v1.js';
import { PiAdapter } from './pi/v1.js';
import { AmpAdapter } from './amp/v1.js';
import { CopilotAdapter } from './copilot/v1.js';
import { ClineAdapter } from './cline/v1.js';
import { HermesAdapter } from './hermes/v1.js';

// Export types and base classes
export type { TraceAdapter } from './adapter.js';
export { BaseAdapter, AdapterRegistry, registry } from './adapter.js';

// Export adapters
export { ClaudeCodeAdapter } from './claude-code/v1.js';
export { CursorAdapter } from './cursor/v1.js';
export { OpenCodeAdapter } from './opencode/v2.js';
export { CodexAdapter } from './codex/v1.js';
export { GeminiCliAdapter } from './gemini-cli/v1.js';
export { PiAdapter } from './pi/v1.js';
export { AmpAdapter } from './amp/v1.js';
export { CopilotAdapter } from './copilot/v1.js';
export { ClineAdapter } from './cline/v1.js';
export { HermesAdapter } from './hermes/v1.js';

/**
 * Initialize all adapters and register them
 */
export function initializeAdapters(): void {
  // Register Claude Code adapter
  registry.register(new ClaudeCodeAdapter());

  // Register Cursor adapter
  registry.register(new CursorAdapter());

  // Register OpenCode adapter
  registry.register(new OpenCodeAdapter());

  // Register Codex adapter
  registry.register(new CodexAdapter());

  // Register Gemini CLI adapter
  registry.register(new GeminiCliAdapter());

  // Register Pi adapter
  registry.register(new PiAdapter());

  // Register Amp adapter
  registry.register(new AmpAdapter());

  // Register Copilot adapter
  registry.register(new CopilotAdapter());

  // Register Cline adapter
  registry.register(new ClineAdapter());

  // Register Hermes adapter
  registry.register(new HermesAdapter());
}

// Auto-initialize on import
initializeAdapters();

```

## Assistant

**Result** (success):
```
Chunk ID: 1b0219
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 817
Output:
/**
 * Core types for the Traces CLI
 */

import type { VisibilityValue } from '@traces/shared';

// Supported agent IDs
export type AgentId = 
  | 'claude-code' 
  | 'cursor' 
  | 'opencode'
  | 'windsurf' 
  | 'copilot' 
  | 'gemini-cli' 
  | 'codex' 
  | 'pi'
  | 'amp'
  | 'cline'
  | 'hermes'
  | 'manual';

// Model identifiers
export type ModelId = string;

// Trace visibility
export type TraceVisibility = VisibilityValue;

// =============================================================================
// Event-Sourced Trace Model
// =============================================================================

/**
 * Base interface for all trace events
 */
interface BaseEvent {
  id: string;
  timestamp: number;
  order: number;
}

/**
 * User sent a message
 */
export interface UserMessageEvent extends BaseEvent {
  type: 'user_message';
  content: string;
}

/**
 * Agent produced text output
 */
export interface AgentTextEvent extends BaseEvent {
  type: 'agent_text';
  content: string;
  modelId?: string;
}

/**
 * Agent's internal thinking/reasoning (extended thinking, chain of thought)
 */
export interface AgentThinkingEvent extends BaseEvent {
  type: 'agent_thinking';
  content: string;
  durationMs?: number;
}

/**
 * Agent initiated a tool call
 */
export interface ToolCallEvent extends BaseEvent {
  type: 'tool_call';
  callId: string;
  toolName: string;
  args: Record<string, unknown>;
}

/**
 * Tool returned a result
 */
export interface ToolResultEvent extends BaseEvent {
  type: 'tool_result';
  callId: string;
  toolName: string;
  output: string;
  status: 'success' | 'error';
}

/**
 * An error occurred
 */
export interface ErrorEvent extends BaseEvent {
  type: 'error';
  message: string;
}

/**
 * Union of all event types
 */
export type TraceEvent =
  | UserMessageEvent
  | AgentTextEvent
  | AgentThinkingEvent
  | ToolCallEvent
  | ToolResultEvent
  | ErrorEvent;

/**
 * Event type discriminator
 */
export type TraceEventType = TraceEvent['type'];

/**
 * Core trace metadata (stored in EventStore)
 */
export interface TraceMetadata {
  id: string;
  agentId: AgentId;
  title: string;
  preview: string;
  timestamp: number;
  directory?: string;
  sourcePath?: string;
  sharedUrl?: string;
  sharedVisibility?: TraceVisibility;
  modelId?: ModelId;
  gitRemoteUrl?: string;
  gitBranch?: string;
  gitRef?: string;
}

/**
 * Environment details - context about where/when trace ran (derived from content)
 */
export interface EnvironmentDetails {
  projectPath?: string;
  projectName?: string;
  createdAt?: string;
  updatedAt?: string;
}

/**
 * Full trace content with all events
 */
export interface TraceContent {
  events: TraceEvent[];
  modelIds: ModelId[];
  createdAt: string;
  updatedAt: string;
}

/**
 * Adapter configuration
 */
export interface AdapterConfig {
  enabled: boolean;
  // Additional adapter-specific config
  [key: string]: unknown;
}

/**
 * CLI configuration
 */
export interface Config {
  autoupdate: boolean | 'notify';
  adapters: Partial<Record<AgentId, AdapterConfig>>;
}

/**
 * Default configuration
 */
export const DEFAULT_CONFIG: Config = {
  autoupdate: true,
  adapters: {
    'claude-code': { enabled: true },
    'cursor': { enabled: true },
  },
};

```

## Assistant

The key distinction is becoming clear: ACP is for live client↔agent interaction, while Traces adapters today are retrospective file/database readers. I’m checking the skill/setup side too, because that’s where ACP could overlap most cleanly.

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "rg -n \"setup skills|share-to-traces|TRACES_CURRENT_TRACE_ID|TRACES_CURRENT_SOURCE_PATH|available_commands|slash\" cli/src docs .agents | sed -n '1,240p'",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,260p' /Users/tarunsachdeva/.agents/skills/share-to-traces/SKILL.md",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: 07b1e3
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 3052
Output:
docs/adding-agents.md:10:3. **Agent skills/instructions** - Ensure `share-to-traces` is available via central skills registry
docs/adding-agents.md:185:New adapters must ensure the central `share-to-traces` skill is installed for the runtime.
docs/adding-agents.md:189:# or: traces setup skills
docs/adding-agents.md:195:traces setup skills --agent <agent-id>
docs/adding-agents.md:222:TRACES_CURRENT_TRACE_ID="<id>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
docs/adding-agents.md:223:TRACES_CURRENT_SOURCE_PATH="<path>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
docs/adding-agents.md:244:- central `share-to-traces` skill is installed,
docs/adding-agents.md:245:- skill prefers exact current-session hint (`TRACES_CURRENT_TRACE_ID` or `TRACES_CURRENT_SOURCE_PATH`) before cwd fallback,
docs/deployment/production.md:166:traces setup skills --agent codex
docs/projects/traces-com-transition.md:102:- `package.json:15` (`scripts/share-to-traces.sh` is a filename, not a hostname)
cli/src/commands/setup.test.ts:166:      expect(installedFiles[0].destPath).toContain("share-to-traces/SKILL.md");
cli/src/commands/setup.test.ts:214:      expect(paths).toContainEqual(expect.stringContaining(".claude/skills/share-to-traces/SKILL.md"));
cli/src/commands/setup.test.ts:215:      expect(paths).toContainEqual(expect.stringContaining(".claude/commands/share-to-traces.md"));
cli/src/commands/setup.test.ts:234:      expect(paths).toContainEqual(expect.stringContaining(".agents/skills/share-to-traces/SKILL.md"));
cli/src/commands/setup.test.ts:235:      expect(paths).toContainEqual(expect.stringContaining(".opencode/commands/share-to-traces.md"));
cli/src/commands/setup.test.ts:246:      expect(paths).toContainEqual(expect.stringContaining(".agents/skills/share-to-traces/SKILL.md"));
cli/src/commands/setup.test.ts:247:      expect(paths).toContainEqual(expect.stringContaining(".config/opencode/commands/share-to-traces.md"));
cli/src/commands/setup.test.ts:258:      expect(paths).toContainEqual(expect.stringContaining(".agents/skills/share-to-traces/SKILL.md"));
cli/src/commands/setup.test.ts:259:      expect(paths).toContainEqual(expect.stringContaining(".cursor/commands/share-to-traces.md"));
cli/src/commands/setup.test.ts:276:      expect(installedFiles[0].destPath).toContain(".agents/skills/share-to-traces/SKILL.md");
cli/src/commands/setup.test.ts:287:      expect(installedFiles[0].destPath).toContain(".agents/skills/share-to-traces/SKILL.md");
cli/src/commands/setup.test.ts:298:      expect(installedFiles[0].destPath).toContain(".agents/skills/share-to-traces/SKILL.md");
cli/src/commands/setup.test.ts:309:      expect(paths).toContainEqual(expect.stringContaining(".agents/skills/share-to-traces/SKILL.md"));
cli/src/commands/setup.test.ts:321:      expect(paths).toContainEqual(expect.stringContaining(".agents/skills/share-to-traces/SKILL.md"));
cli/src/commands/setup.test.ts:322:      expect(paths).toContainEqual(expect.stringContaining(".gemini/commands/share-to-traces.toml"));
cli/src/commands/setup.test.ts:325:        f.destPath.includes(".gemini/commands/share-to-traces.toml")
cli/src/commands/setup.test.ts:339:      expect(paths).toContainEqual(expect.stringContaining(".pi/skills/share-to-traces/SKILL.md"));
cli/src/commands/setup.test.ts:340:      expect(paths).toContainEqual(expect.stringContaining(".pi/prompts/share-to-traces.md"));
cli/src/commands/setup.test.ts:353:      expect(installedFiles[0].destPath).toContain(".agents/skills/share-to-traces/SKILL.md");
docs/projects/share-to-traces-skills.md:15:- Completed: central `skills/share-to-traces/SKILL.md` contract with trigger phrases, selector priority, and error mapping.
docs/projects/share-to-traces-skills.md:215:- [x] Publish one central skills.sh `share-to-traces` skill for all runtimes.
docs/projects/share-to-traces-skills.md:225:- [ ] Publish and install `share-to-traces` from central skills registry.
docs/projects/share-to-traces-skills.md:230:  - [x] first choice: `TRACES_CURRENT_TRACE_ID="<current-session-id>" traces share --cwd "$PWD" --agent <current-agent|auto> --json`
docs/projects/share-to-traces-skills.md:231:  - [x] second choice: `TRACES_CURRENT_SOURCE_PATH="<current-session-file>" traces share --cwd "$PWD" --agent <current-agent|auto> --json`
docs/projects/share-to-traces-skills.md:234:  - [x] `TRACES_CURRENT_TRACE_ID="<id>" traces share --cwd "$PWD" --agent <current-agent|auto> --json`
docs/projects/share-to-traces-skills.md:263:- [x] Skill should read runtime/session context and pass `TRACES_CURRENT_TRACE_ID` or `TRACES_CURRENT_SOURCE_PATH` when available.
docs/projects/share-to-traces-skills.md:269:- [x] env hint `TRACES_CURRENT_TRACE_ID` (or `TRACES_CURRENT_SOURCE_PATH`) if present
docs/projects/share-to-traces-skills.md:301:- [ ] central `share-to-traces` skill installed for that runtime
docs/projects/share-to-traces-skills.md:348:- [x] `skills/share-to-traces/SKILL.md`
docs/projects/share-to-traces-skills.md:354:  1. `TRACES_CURRENT_TRACE_ID="<id>"` hint when current session id is known
docs/projects/share-to-traces-skills.md:355:  2. `TRACES_CURRENT_SOURCE_PATH="<path>"` hint when current session file path is known
docs/projects/share-to-traces-skills.md:374:TRACES_CURRENT_TRACE_ID="<session-id>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
docs/projects/share-to-traces-skills.md:375:TRACES_CURRENT_SOURCE_PATH="<session-file>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
docs/projects/share-to-traces-skills.md:383:- slash-command registration (for example `/share-to-traces`)
docs/projects/share-to-traces-skills.md:393:- [x] Include `skills/share-to-traces/SKILL.md` as installable source.
cli/src/commands/remove-skills.test.ts:47:        filePath.includes(".agents/skills/share-to-traces/SKILL.md")
cli/src/commands/remove-skills.test.ts:52:        filePath.includes(".claude/skills/share-to-traces/SKILL.md")
cli/src/commands/remove-skills.test.ts:77:        filePath.includes(".config/opencode/commands/share-to-traces.md")
cli/src/commands/remove-skills.test.ts:87:        filePath.includes(".opencode/commands/share-to-traces.md")
cli/src/commands/share.test.ts:28:  delete process.env.TRACES_CURRENT_TRACE_ID;
cli/src/commands/share.test.ts:30:  delete process.env.TRACES_CURRENT_SOURCE_PATH;
cli/src/commands/share.test.ts:521:    process.env.TRACES_CURRENT_TRACE_ID = "trace-456";
cli/src/commands/setup-assets.ts:11:import hermesSkillSource from '../../../skills/share-to-traces/installable/hermes/SKILL.md' with { type: 'text' };
cli/src/commands/setup-assets.ts:57:name: share-to-traces
cli/src/commands/setup-assets.ts:90:The hook automatically sets \`TRACES_CURRENT_TRACE_ID\` — just run:
cli/src/commands/setup-assets.ts:109:TRACES_CURRENT_TRACE_ID="<session-id>" traces share --cwd "$PWD" --agent claude-code --json
cli/src/commands/setup-assets.ts:163:# Injects TRACES_CURRENT_TRACE_ID and TRACES_CURRENT_AGENT into the session
cli/src/commands/setup-assets.ts:197:  echo "export TRACES_CURRENT_TRACE_ID=\\"\${SESSION_ID}\\"" >> "$CLAUDE_ENV_FILE"
cli/src/commands/setup-assets.ts:325:    { relPath: ".claude/skills/share-to-traces/SKILL.md", content: CLAUDE_CODE_SKILL },
cli/src/commands/setup-assets.ts:326:    { relPath: ".claude/commands/share-to-traces.md", content: CLAUDE_CODE_COMMAND },
cli/src/commands/setup-assets.ts:340:name: share-to-traces
cli/src/commands/setup-assets.ts:445: * 1. \`shell.env\` hook — Injects TRACES_CURRENT_TRACE_ID and TRACES_CURRENT_AGENT
cli/src/commands/setup-assets.ts:469:        output.env.TRACES_CURRENT_TRACE_ID = input.sessionID
cli/src/commands/setup-assets.ts:504:              TRACES_CURRENT_TRACE_ID: context.sessionID,
cli/src/commands/setup-assets.ts:599:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: OPENCODE_SKILL },
cli/src/commands/setup-assets.ts:600:    { relPath: ".opencode/commands/share-to-traces.md", content: OPENCODE_COMMAND },
cli/src/commands/setup-assets.ts:644:# Injects TRACES_CURRENT_TRACE_ID and TRACES_CURRENT_AGENT into the agent
cli/src/commands/setup-assets.ts:677:  echo "{\\"env\\":{\\"TRACES_CURRENT_TRACE_ID\\":\\"\${SESSION_ID}\\",\\"TRACES_CURRENT_AGENT\\":\\"cursor\\"}}"
cli/src/commands/setup-assets.ts:720:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: OPENCODE_SKILL },
cli/src/commands/setup-assets.ts:721:    { relPath: ".cursor/commands/share-to-traces.md", content: CURSOR_COMMAND },
cli/src/commands/setup-assets.ts:735:name: share-to-traces
cli/src/commands/setup-assets.ts:797:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: CODEX_SKILL },
cli/src/commands/setup-assets.ts:806:name: share-to-traces
cli/src/commands/setup-assets.ts:869:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: CLINE_SKILL },
cli/src/commands/setup-assets.ts:878:name: share-to-traces
cli/src/commands/setup-assets.ts:941:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: AMP_SKILL },
cli/src/commands/setup-assets.ts:950:name: share-to-traces
cli/src/commands/setup-assets.ts:1033:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: COPILOT_SKILL },
cli/src/commands/setup-assets.ts:1043:name: share-to-traces
cli/src/commands/setup-assets.ts:1101:# Gemini CLI custom command — triggered via /share-to-traces
cli/src/commands/setup-assets.ts:1103:# Install: copy to ~/.gemini/commands/share-to-traces.toml
cli/src/commands/setup-assets.ts:1104:# or <project>/.gemini/commands/share-to-traces.toml
cli/src/commands/setup-assets.ts:1136:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: GEMINI_SKILL },
cli/src/commands/setup-assets.ts:1137:    { relPath: ".gemini/commands/share-to-traces.toml", content: GEMINI_COMMAND_TOML },
cli/src/commands/setup-assets.ts:1146:name: share-to-traces
cli/src/commands/setup-assets.ts:1376:    { relPath: ".pi/skills/share-to-traces/SKILL.md", content: PI_SKILL },
cli/src/commands/setup-assets.ts:1377:    { relPath: ".pi/prompts/share-to-traces.md", content: PI_PROMPT },
cli/src/commands/setup-assets.ts:1381:    "The extension file content is available at: skills/share-to-traces/installable/pi/extensions/traces.ts",
cli/src/commands/setup-assets.ts:1396:    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: HERMES_SKILL },
cli/src/commands/share.ts:103:  /** Was TRACES_CURRENT_TRACE_ID set in env? */
cli/src/commands/share.ts:119:  const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
cli/src/commands/share.ts:257:      const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
cli/src/commands/share.ts:264:          `TRACES_CURRENT_TRACE_ID="${envTraceId}" was set but no matching trace was found after scanning. ` +
cli/src/commands/share.ts:533:  // When --cwd is used but TRACES_CURRENT_TRACE_ID is set in env,
cli/src/commands/share.ts:537:    const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
cli/src/commands/share.ts:594:  /** True when TRACES_CURRENT_TRACE_ID (or similar env var) was set but no match was found. */
cli/src/commands/share.ts:608:  const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
cli/src/commands/share.ts:620:    process.env.TRACES_CURRENT_SOURCE_PATH?.trim() || process.env.TRACES_SOURCE_PATH?.trim();
docs/cli.md:68:traces setup skills
docs/cli.md:71:traces setup skills --agent codex,cursor
docs/cli.md:81:- `traces setup` currently maps to `traces setup skills`.
docs/projects/model-db-consumption.md:49:3. Strip slash prefix (`amazon-bedrock/`, `anthropic/`)
docs/projects/model-db-consumption.md:57:Order matters: slash before dot (so `anthropic/claude-opus-4.1` works), version suffix before date (so `-20250514-v1:0` strips both).
docs/projects/model-db-consumption.md:153:- **Normalization order matters** — slash before dot, version suffix before date suffix. Each step exposes the next pattern for stripping
docs/api.md:908:Get a model by provider and model ID. The model ID segment can contain slashes.
.agents/skills/git-worktree/SKILL.md:50:Use the sanitized directory name (dashes, not slashes).

```

## Assistant

**Result** (success):
```
Chunk ID: ca9869
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 319
Output:
---
name: share-to-traces
description: Share the current coding session to Traces and return the share URL.
metadata:
  author: traces
  version: "1.2.0"
  cli-contract-version: "1"
  argument-hint: [optional trace id or source path]
---

# Share To Traces

Publish the active trace to Traces and return the URL.

## Triggers

- "share to traces"
- "publish this trace"
- "share this session"

## How Session Resolution Works

Gemini CLI does not expose the current session ID to child processes. The
command relies on `--cwd` matching to find the most recent trace, or you can
use `--list` to discover and then `--trace-id` for exact selection.

## Command

### Direct share (uses cwd heuristic):

```bash
traces share --cwd "$PWD" --agent gemini-cli --json
```

### With discovery (recommended when multiple sessions exist):

```bash
# Step 1: List available traces
traces share --list --cwd "$PWD" --agent gemini-cli --json

# Step 2: Share a specific trace by ID
traces share --trace-id <selected-id> --json
```

## Output Behavior

- Parse the JSON output and reply with the `sharedUrl`.
- On failure:
  - `AUTH_REQUIRED`: run `traces login`, then retry.
  - `TRACE_NOT_FOUND`: use `--list` to discover, then `--trace-id`.
  - `UPLOAD_FAILED`: check network, then retry.

```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '760,840p' cli/src/commands/setup-assets.ts",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '80,180p' cli/src/commands/share.ts",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '520,660p' cli/src/commands/share.ts",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: e0f66f
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 533
Output:
## Command

### Direct share (uses cwd heuristic):

\`\`\`bash
traces share --cwd "$PWD" --agent codex --json
\`\`\`

### With discovery (recommended when multiple sessions exist):

\`\`\`bash
# Step 1: List available traces
traces share --list --cwd "$PWD" --agent codex --json

# Step 2: Share a specific trace by ID
traces share --trace-id <selected-id> --json
\`\`\`

## Visibility

Do NOT pass \`--visibility\` unless the user explicitly requests it. The CLI
defaults to the correct visibility based on the user's namespace type.

## Output Behavior

- Parse the JSON output and reply with the \`sharedUrl\`.
- On failure:
  - \`AUTH_REQUIRED\`: run \`traces login\`, then retry.
  - \`TRACE_NOT_FOUND\`: use \`--list\` to discover, then \`--trace-id\`.
  - \`UPLOAD_FAILED\`: check network, then retry.
`;

export const codexManifest: AgentInstallManifest = {
  id: "codex",
  label: "Codex",
  detectionPaths: [".codex", "codex.json"],
  files: [
    { relPath: ".agents/skills/share-to-traces/SKILL.md", content: CODEX_SKILL },
  ],
};

// ---------------------------------------------------------------------------
// Cline
// ---------------------------------------------------------------------------

const CLINE_SKILL = `---
name: share-to-traces
description: Share the current coding session to Traces and return the share URL.
metadata:
  author: traces
  version: "1.2.0"
  cli-contract-version: "1"
  argument-hint: [optional trace id or source path]
---

# Share To Traces

Publish the active trace to Traces and return the URL.

## Triggers

- "share to traces"
- "publish this trace"
- "share this session"

## How Session Resolution Works

Cline stores traces under \`~/.cline/data/tasks\` (legacy: \`~/.cline/tasks\`).
The active task ID is not reliably exposed to shell commands, so this skill
uses \`--cwd\` matching by default. When multiple traces exist, use \`--list\`
and then \`--trace-id\` for deterministic selection.

## Command

### Direct share (uses cwd heuristic):

\`\`\`bash
traces share --cwd "$PWD" --agent cline --json
\`\`\`

### With discovery (recommended when multiple sessions exist):

```

## Assistant

**Result** (success):
```
Chunk ID: e25ec7
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 845
Output:
  timestamp: number;
  directory?: string;
  sourcePath?: string;
  sharedUrl?: string;
  sharedVisibility?: string;
};

type ShareControllerLike = {
  start(): Promise<void>;
  list(limit?: number): Promise<ShareTrace[]>;
  refresh?(): Promise<void>;
  share(trace: ShareTrace, options?: { visibility?: TraceVisibility }): Promise<{ url: string }>;
  destroy(): void;
};

// ---------------------------------------------------------------------------
// Telemetry — single wide event per share invocation
// ---------------------------------------------------------------------------

type ShareTelemetry = {
  /** How the trace was selected */
  selector: Selector | "list" | "none";
  agent: string;
  /** Was TRACES_CURRENT_TRACE_ID set in env? */
  env_hint_set: boolean;
  env_hint_value: string;
  /** Did we need a refresh retry to find the trace? */
  needed_refresh: boolean;
  /** The trace that was selected (or empty) */
  trace_id: string;
  trace_agent: string;
  visibility: string;
  /** "success" | error code */
  outcome: string;
  error_message: string;
  elapsed_ms: number;
};

function createShareTelemetry(options: ShareCommandOptions): ShareTelemetry {
  const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
  return {
    selector: options.list ? "list" : "none",
    agent: options.agent ?? "auto",
    env_hint_set: !!envTraceId,
    env_hint_value: envTraceId ?? "",
    needed_refresh: false,
    trace_id: "",
    trace_agent: "",
    visibility: options.visibility ?? "",
    outcome: "unknown",
    error_message: "",
    elapsed_ms: 0,
  };
}

function emitShareTelemetry(tel: ShareTelemetry, startTime: number): void {
  tel.elapsed_ms = Date.now() - startTime;

  // -- Wide structured log --------------------------------------------------
  if (tel.outcome === "success") {
    Sentry.logger.info("cli.share", { ...tel });
  } else {
    Sentry.logger.warn("cli.share", { ...tel });
  }

  // -- Metrics --------------------------------------------------------------
  const attributes = { outcome: tel.outcome, selector: tel.selector, agent: tel.agent };

  Sentry.metrics.distribution("cli.share.command_duration", tel.elapsed_ms, {
    unit: "millisecond",
    attributes,
  });
  Sentry.metrics.count("cli.share.invocations", 1, { attributes });

  if (tel.env_hint_set && tel.outcome === "TRACE_NOT_FOUND") {
    Sentry.metrics.count("cli.share.env_hint_miss", 1, {
      attributes: { agent: tel.agent },
    });
  }
}

// ---------------------------------------------------------------------------
// Runtime
// ---------------------------------------------------------------------------

export type ShareRuntime = {
  applyEnv(): void;
  createStore(): EventStoreApi;
  createApi(authToken?: string): Api;
  createController(store: EventStoreApi, api: Api): ShareControllerLike;
  loadCredentials(): UserCredentials | null;
  getCurrentTraceHints(options: { cwd?: string; agentId?: AgentId }): Promise<Array<{ agentId: AgentId; traceId?: string; sourcePath?: string; timestamp?: number }>>;
  waitForFollowStop(): Promise<void>;
  writeStdout(message: string): void;
  writeStderr(message: string): void;
};

const defaultRuntime: ShareRuntime = {
  applyEnv: () => applyDefaultEnv(),
  createStore: () => new EventStore(),
  createApi: (authToken?: string) => createApi({ authToken }),

```

## Assistant

**Result** (success):
```
Chunk ID: 685853
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1211
Output:
    };
  }

  if (options.token !== undefined && options.token.trim().length === 0) {
    return {
      ok: false,
      error: {
        code: "INVALID_ARGUMENTS",
        message: "Invalid value for --key. Provide a non-empty bearer token.",
      },
    };
  }

  // When --cwd is used but TRACES_CURRENT_TRACE_ID is set in env,
  // report the selector as env-hint for accurate attribution.
  let selector = selectors[0];
  if (selector === "cwd") {
    const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
    if (envTraceId) {
      selector = "env-hint";
    }
  }

  return { ok: true, selector };
}

async function selectTrace(
  traces: ShareTrace[],
  options: ShareCommandOptions,
  selector: Selector,
  runtime: ShareRuntime
): Promise<ShareTrace | null> {
  if (selector === "trace-id") {
    const filtered = filterByAgent(traces, options.agent);
    return filtered.find((trace) => trace.id === options.traceId) ?? null;
  }

  if (selector === "source-path") {
    const target = normalizePath(options.sourcePath);
    const filtered = filterByAgent(traces, options.agent);
    return (
      filtered.find((trace) => normalizePath(trace.sourcePath) === target) ?? null
    );
  }

  // env-hint or cwd selector — try hints first
  const cwd = normalizePath(options.cwd);
  const hintResult = await selectTraceFromHints(traces, options, cwd, runtime);

  if (hintResult?.found) return hintResult.found;

  // If an env var hint was explicitly set but didn't match any scanned trace,
  // do NOT fall back to cwd matching — the caller should retry after refresh
  // or fail explicitly. Silently sharing a different session is worse than failing.
  if (hintResult?.envHintSet) return null;

  const filtered = filterByAgent(traces, options.agent).filter((trace) => {
    const traceDir = normalizePath(trace.directory);
    if (traceDir && isSameOrChildPath(traceDir, cwd)) return true;
    const sourcePath = normalizePath(trace.sourcePath);
    return sourcePath ? isSameOrChildPath(sourcePath, cwd) : false;
  });

  if (filtered.length === 0) {
    const fallback = selectAgentLatestWithoutCwdMatch(traces, options.agent);
    if (fallback) return fallback;
    return null;
  }

  return filtered.sort(compareTraceOrder)[0] ?? null;
}

type HintResult = {
  found: ShareTrace | null;
  /** True when TRACES_CURRENT_TRACE_ID (or similar env var) was set but no match was found. */
  envHintSet: boolean;
  /** The env var value that was set, for error messages. */
  envTraceId?: string;
};

async function selectTraceFromHints(
  traces: ShareTrace[],
  options: ShareCommandOptions,
  cwd: string | undefined,
  runtime: ShareRuntime
): Promise<HintResult | null> {
  const filtered = filterByAgent(traces, options.agent);

  const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
  if (envTraceId) {
    // When filtered list is empty, still report that the hint was set
    const match = filtered.find((trace) => trace.id === envTraceId) ?? null;
    if (match && traceMatchesCwd(match, cwd)) {
      return { found: match, envHintSet: true, envTraceId };
    }
    // Hint was set but no match — don't fall through to other heuristics
    return { found: null, envHintSet: true, envTraceId };
  }

  const envSourcePath =
    process.env.TRACES_CURRENT_SOURCE_PATH?.trim() || process.env.TRACES_SOURCE_PATH?.trim();
  if (envSourcePath) {
    const normalized = normalizePath(envSourcePath);
    const match = filtered.find((trace) => normalizePath(trace.sourcePath) === normalized) ?? null;
    if (match && traceMatchesCwd(match, cwd)) {
      return { found: match, envHintSet: true };
    }
    return { found: null, envHintSet: true };
  }

  if (filtered.length === 0) return null;

  const hintAgent = options.agent && options.agent !== "auto" ? (options.agent as AgentId) : undefined;
  const hints = await runtime.getCurrentTraceHints({ cwd, agentId: hintAgent });
  if (hints.length === 0) return null;

  const hintMatches = hints
    .map((hint) => {
      if (hint.traceId) {
        return filtered.find(
          (trace) => trace.agentId === hint.agentId && trace.id === hint.traceId
        );
      }
      if (hint.sourcePath) {
        const normalized = normalizePath(hint.sourcePath);
        return filtered.find(
          (trace) =>
            trace.agentId === hint.agentId && normalizePath(trace.sourcePath) === normalized
        );
      }
      return undefined;
    })
    .filter((trace): trace is ShareTrace => Boolean(trace))
    .filter((trace) => traceMatchesCwd(trace, cwd));

  if (hintMatches.length === 0) return null;
  hintMatches.sort(compareTraceOrder);
  return { found: hintMatches[0], envHintSet: false };
}

function traceMatchesCwd(trace: ShareTrace, cwd?: string): boolean {

```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "rg -n \"getCurrentTraceHints|getCurrentTraceHint\\(\" cli/src | sed -n '1,220p'",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "sed -n '1,220p' cli/src/core/trace-controller.ts",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: b5ea7a
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 412
Output:
cli/src/commands/share.test.ts:76:      getCurrentTraceHints: async () => [],
cli/src/commands/setup-assets.ts:1167:Pi's adapter implements \`getCurrentTraceHint()\` which provides a heuristic
cli/src/commands/share.ts:171:  getCurrentTraceHints(options: { cwd?: string; agentId?: AgentId }): Promise<Array<{ agentId: AgentId; traceId?: string; sourcePath?: string; timestamp?: number }>>;
cli/src/commands/share.ts:183:  getCurrentTraceHints: (options) => registry.getCurrentTraceHints(options),
cli/src/commands/share.ts:633:  const hints = await runtime.getCurrentTraceHints({ cwd, agentId: hintAgent });
cli/src/core/trace-controller.test.ts:20:    getCurrentTraceHints: async () => [],
cli/src/adapters/copilot/v1.ts:284:  async getCurrentTraceHint(cwd?: string): Promise<CurrentTraceHint | null> {
cli/src/adapters/adapter.ts:156:  async getCurrentTraceHint(_cwd?: string): Promise<CurrentTraceHint | null> {
cli/src/adapters/adapter.ts:308:  async getCurrentTraceHints(options: { cwd?: string; agentId?: AgentId } = {}): Promise<Array<CurrentTraceHint & { agentId: AgentId }>> {
cli/src/adapters/adapter.ts:317:          ? await adapter.getCurrentTraceHint(options.cwd)
cli/src/adapters/pi/v1.ts:202:  async getCurrentTraceHint(cwd?: string): Promise<{ traceId?: string; sourcePath?: string; timestamp?: number } | null> {
cli/src/adapters/hermes/v1.ts:280:  async getCurrentTraceHint(_cwd?: string): Promise<CurrentTraceHint | null> {
cli/src/adapters/amp/v1.ts:435:  async getCurrentTraceHint(cwd?: string): Promise<CurrentTraceHint | null> {
cli/src/adapters/hermes/v1.test.ts:495:    const hint = await adapter.getCurrentTraceHint();

```

## Assistant

**Result** (success):
```
Chunk ID: 942055
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1687
Output:
/**
 * Trace Controller
 *
 * Orchestrates trace operations - the main entry point for the TUI.
 * Handles listing, sharing, unsharing, and background sync.
 */

import type { TraceMetadata, TraceContent, EnvironmentDetails, TraceEvent } from '../types.js';
import type { EventStoreApi } from './event-store.js';
import type { AdapterRegistry } from '../adapters/adapter.js';
import type { Api } from '../services/api.js';
import { Trace } from './trace.js';
import { TraceIndexer, type TraceIndexerLike } from './trace-indexer.js';
import { Sentry } from '../services/sentry.js';

type UploadOperation = 'share' | 'unshare' | 'refresh';
type UploadState = { status: 'queued' | 'uploading'; operation: UploadOperation };
type UploadStateListener = (traceId: string, state: UploadState | null) => void;
type IndexRefreshListener = (upserted: number) => void;
type ListOptions = {
  seedIfEmpty?: boolean;
};

export class TraceController {
  private store: EventStoreApi;
  private adapters: AdapterRegistry;
  private api: Api;
  private indexer: TraceIndexerLike;

  // Active subscriptions for shared traces
  private syncSubscriptions = new Map<string, () => void>();
  private adapterSubscriptions = new Map<string, () => void>();
  // Serialization chains per trace — ensures only one syncEvent is in-flight at a time
  // to prevent Convex OCC conflicts on the traces document
  private syncChains = new Map<string, Promise<void>>();

  private uploadQueue: Array<{
    trace: Trace;
    operation: UploadOperation;
    visibility?: TraceMetadata['sharedVisibility'];
    resolve: (value: unknown) => void;
    reject: (error: unknown) => void;
  }> = [];
  private uploadProcessing = false;
  private uploadListeners = new Set<UploadStateListener>();
  private indexRefreshListeners = new Set<IndexRefreshListener>();
  private remoteShareSyncPromise: Promise<void> | null = null;
  private clearedShareState = false;
  private remoteTitles = new Map<string, string>();
  private missingAdapterWarnings = new Set<string>();

  constructor(
    store: EventStoreApi,
    adapters: AdapterRegistry,
    api: Api,
    indexer?: TraceIndexerLike
  ) {
    this.store = store;
    this.adapters = adapters;
    this.api = api;
    this.indexer = indexer ?? new TraceIndexer(store, adapters);
  }

  /**
   * Start the controller - restores subscriptions for shared traces.
   * Idempotent - safe to call multiple times.
   */
  async start(): Promise<void> {
    const storedTraces = await this.store.listTraces();
    for (const metadata of storedTraces) {
      if (!metadata.sharedUrl) continue;
      const adapter = this.adapters.get(metadata.agentId);
      if (!adapter) continue;
      const trace = Trace.fromMetadata(metadata, this.store, adapter);
      if (!this.syncSubscriptions.has(trace.id)) {
        await this.setupSubscriptions(trace);
      }
    }
  }

  /**
   * List all traces, merged from adapters and store
   */
  async list(limit: number = 100, options: ListOptions = {}): Promise<Trace[]> {
    const seedIfEmpty = options.seedIfEmpty ?? true;
    const storedTraces = await this.store.listTraces(limit);
    if (storedTraces.length > 0) {
      this.triggerBackgroundRefresh(limit);
      return this.toTraces(storedTraces);
    }

    if (!seedIfEmpty) {
      this.triggerBackgroundRefresh(limit);
      return [];
    }

    await this.indexer.refresh(limit);
    return this.toTraces(await this.store.listTraces(limit));
  }

  /**
   * Find a trace by ID
   */
  async find(id: string): Promise<Trace | null> {
    const stored = await this.store.getTrace(id);
    if (stored) {
      return this.toTrace(stored);
    }

    await this.indexer.refresh();
    const refreshed = await this.store.getTrace(id);
    return refreshed ? this.toTrace(refreshed) : null;
  }

  /**
   * Refresh traces from adapters
   */
  async refresh(): Promise<void> {
    const upserted = await this.indexer.refresh();
    this.emitIndexRefresh(upserted);
  }

  /**
   * Sync shared state from remote (no throttle).
   * Safe to call multiple times.
   */
  async syncSharedState(limit?: number): Promise<void> {
    if (!this.api.isAuthenticated() || !this.api.isConfigured()) {
      if (!this.clearedShareState) {
        await this.clearSharedState(limit);
        this.clearedShareState = true;
      }
      return;
    }

    this.clearedShareState = false;
    await this.performShareSync(limit);
  }

  /**
   * Refresh a shared trace - upsert any missing events
   */
  refreshTrace(trace: Trace): Promise<{ appended: number; total: number }> {
    return this.enqueueUpload(trace, 'refresh') as Promise<{ appended: number; total: number }>;
  }

  /**
   * Get trace content
   */
  async getContent(trace: Trace): Promise<TraceContent> {
    return trace.getContent();
  }

  /**
   * Get trace content from metadata
   */
  async getContentForMetadata(metadata: TraceMetadata): Promise<TraceContent> {
    const adapter = this.adapters.get(metadata.agentId);
    if (!adapter) {
      throw new Error(`No adapter found for agent: ${metadata.agentId}`);
    }
    const trace = Trace.fromMetadata(metadata, this.store, adapter);
    return trace.getContent();
  }

  /**
   * Get environment details
   */
  async getEnvironmentDetails(trace: Trace): Promise<EnvironmentDetails> {
    return trace.getEnvironmentDetails();
  }

  /**
   * Get the number of registered adapters
   */
  getAdapterCount(): number {
    return this.adapters.getAll().length;
  }

  getRemoteTitle(traceId: string): string | undefined {
    return this.remoteTitles.get(traceId);
  }

  /**
   * Add a listener for upload state changes (share/unshare queue)
   */
  addUploadListener(listener: UploadStateListener): () => void {
    this.uploadListeners.add(listener);
    return () => this.uploadListeners.delete(listener);
  }

  addIndexRefreshListener(listener: IndexRefreshListener): () => void {
    this.indexRefreshListeners.add(listener);
    return () => this.indexRefreshListeners.delete(listener);
  }

  /**
   * Subscribe to live events for a trace (adapter only)
   */
  async subscribe(trace: Trace, onEvent: (event: TraceEvent) => void): Promise<() => void> {
    const metadata = trace.toMetadata();
    const adapter = this.adapters.get(metadata.agentId);
    if (!adapter) {
      throw new Error(`No adapter found for agent: ${metadata.agentId}`);
    }
    return adapter.subscribe(metadata, onEvent);
  }

  /**
   * Share a trace (queued)
   */
  share(
    trace: Trace,
    options: { visibility?: TraceMetadata['sharedVisibility'] } = {}
  ): Promise<{ url: string }> {
    return this.enqueueUpload(trace, 'share', options.visibility) as Promise<{ url: string }>;
  }

  /**
   * Unshare a trace (queued)

```

## Assistant

I’ve got enough to make a recommendation. ACP is useful here, but mostly as a new live integration layer, not as a replacement for Traces’ current file-based ingestion.

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "nl -ba cli/src/adapters/adapter.ts | sed -n '1,220p'",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "nl -ba cli/src/adapters/adapter.ts | sed -n '280,340p'",
  "max_output_tokens": 3000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "nl -ba docs/adding-agents.md | sed -n '1,260p'",
  "max_output_tokens": 7000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "nl -ba cli/src/commands/share.ts | sed -n '528,652p'",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: 728d8d
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1913
Output:
     1	/**
     2	 * Base adapter interface for reading traces from different agents
     3	 *
     4	 * Each adapter implements this interface to provide a consistent way
     5	 * to discover and read traces from their respective agent's storage.
     6	 */
     7	
     8	import type { AgentId, TraceMetadata, TraceContent, AdapterConfig, TraceEvent, EnvironmentDetails } from '../types.js';
     9	import {
    10	  isCommandLike as sharedIsCommandLike,
    11	  normalizeTitleCandidate as sharedNormalizeTitleCandidate,
    12	  truncateText as sharedTruncateText,
    13	} from './shared/discovery-utils.js';
    14	import { createDiagnostics, emitDiagnostics, emitAvailability, emitAdapterError, type ParseDiagnostics } from './shared/diagnostics.js';
    15	
    16	export type { ParseDiagnostics } from './shared/diagnostics.js';
    17	
    18	export type CurrentTraceHint = {
    19	  traceId?: string;
    20	  sourcePath?: string;
    21	  timestamp?: number;
    22	};
    23	
    24	export type TraceIndexCursor = Record<string, unknown>;
    25	
    26	export type TraceIndexBatch = {
    27	  traces: TraceMetadata[];
    28	  nextCursor: TraceIndexCursor;
    29	  done: boolean;
    30	};
    31	
    32	/**
    33	 * Interface that all trace adapters must implement
    34	 */
    35	export interface TraceAdapter {
    36	  /**
    37	   * Unique identifier for this adapter (matches AgentId)
    38	   */
    39	  readonly id: AgentId;
    40	
    41	  /**
    42	   * Human-readable name for the agent
    43	   */
    44	  readonly name: string;
    45	
    46	  /**
    47	   * Check if this adapter is available on the current system
    48	   * (e.g., checks if the agent's data directory exists)
    49	   */
    50	  isAvailable(): Promise<boolean>;
    51	
    52	  /**
    53	   * Get traces from this adapter
    54	   */
    55	  getTraces(options?: { agentId?: AgentId; limit?: number }): Promise<TraceMetadata[]>;
    56	
    57	  /**
    58	   * Get the full content of a specific trace
    59	   * @param trace The trace metadata (from getTraces)
    60	   * @returns The full trace content with all messages
    61	   */
    62	  getTraceContent(trace: TraceMetadata): Promise<TraceContent>;
    63	
    64	  /**
    65	   * Get environment details for a trace (derived from content)
    66	   */
    67	  getEnvironmentDetails(trace: TraceMetadata): Promise<EnvironmentDetails>;
    68	
    69	  /**
    70	   * Subscribe to trace events as they occur
    71	   */
    72	  subscribe(
    73	    trace: TraceMetadata,
    74	    onEvent: (event: TraceEvent) => void
    75	  ): Promise<() => void>;
    76	
    77	  /**
    78	   * Get the event count for a trace (lightweight alternative to getTraceContent)
    79	   */
    80	  count(trace: TraceMetadata): Promise<number>;
    81	
    82	  /**
    83	   * Optional hint for the active/foreground trace in the current agent runtime.
    84	   * Used to improve `traces share` selection when multiple traces exist.
    85	   */
    86	  getCurrentTraceHint?(cwd?: string): Promise<CurrentTraceHint | null>;
    87	
    88	  /**
    89	   * Optional incremental discovery API for indexers.
    90	   */
    91	  getTraceIndexBatch?(options?: { limit?: number; cursor?: TraceIndexCursor }): Promise<TraceIndexBatch>;
    92	
    93	  /**
    94	   * Adapter version identifier
    95	   */
    96	  getVersion(): string;
    97	}
    98	
    99	/**
   100	 * Base class with common functionality for adapters
   101	 */
   102	export abstract class BaseAdapter implements TraceAdapter {
   103	  abstract readonly id: AgentId;
   104	  abstract readonly name: string;
   105	
   106	  protected config: AdapterConfig;
   107	
   108	  constructor(config: AdapterConfig = { enabled: true }) {
   109	    this.config = config;
   110	  }
   111	
   112	  abstract isAvailable(): Promise<boolean>;
   113	  abstract getTraces(options?: { agentId?: AgentId; limit?: number }): Promise<TraceMetadata[]>;
   114	  abstract getEnvironmentDetails(trace: TraceMetadata): Promise<EnvironmentDetails>;
   115	
   116	  /**
   117	   * Parse trace content. Subclasses implement this instead of getTraceContent.
   118	   * Populate the diagnostics object as entries are parsed.
   119	   */
   120	  protected abstract parseTraceContent(trace: TraceMetadata, diagnostics: ParseDiagnostics): Promise<TraceContent>;
   121	
   122	  /**
   123	   * Get the full content of a specific trace with automatic diagnostics.
   124	   * Delegates to parseTraceContent and emits diagnostics on completion.
   125	   */
   126	  async getTraceContent(trace: TraceMetadata): Promise<TraceContent> {
   127	    const diagnostics = createDiagnostics();
   128	    const content = await this.parseTraceContent(trace, diagnostics);
   129	    emitDiagnostics(this.id, trace.id, content.events.length, diagnostics, trace.sourcePath);
   130	    return content;
   131	  }
   132	
   133	  async subscribe(
   134	    trace: TraceMetadata,
   135	    onEvent: (event: TraceEvent) => void
   136	  ): Promise<() => void> {
   137	    const content = await this.getTraceContent(trace);
   138	    for (const event of content.events) {
   139	      onEvent(event);
   140	    }
   141	    return () => {};
   142	  }
   143	
   144	  getVersion(): string {
   145	    return 'v1';
   146	  }
   147	
   148	  /**
   149	   * Default implementation - fetches full content. Override for efficiency.
   150	   */
   151	  async count(trace: TraceMetadata): Promise<number> {
   152	    const content = await this.getTraceContent(trace);
   153	    return content.events.length;
   154	  }
   155	
   156	  async getCurrentTraceHint(_cwd?: string): Promise<CurrentTraceHint | null> {
   157	    return null;
   158	  }
   159	
   160	  /**
   161	   * Helper to generate unique message IDs
   162	   */
   163	  protected generateMessageId(order: number): string {
   164	    return `msg-${order}`;
   165	  }
   166	
   167	  /**
   168	   * Helper to format a timestamp as ISO string
   169	   */
   170	  protected formatTimestamp(timestamp: number): string {
   171	    return new Date(timestamp).toISOString();
   172	  }
   173	
   174	  /**
   175	   * Helper to truncate text to a maximum length
   176	   */
   177	  protected truncateText(text: string, maxLength: number = 100): string {
   178	    return sharedTruncateText(text, maxLength);
   179	  }
   180	
   181	  protected normalizeTitleCandidate(text?: string): string | null {
   182	    return sharedNormalizeTitleCandidate(text, 100);
   183	  }
   184	
   185	  protected isCommandLike(text: string): boolean {
   186	    return sharedIsCommandLike(text);
   187	  }
   188	
   189	  /**
   190	   * Helper to capitalize the first letter of a string
   191	   */
   192	  protected capitalizeFirst(text: string): string {
   193	    if (!text || text.length === 0) return text;
   194	    return text.charAt(0).toUpperCase() + text.slice(1);
   195	  }
   196	}
   197	
   198	/**
   199	 * Registry of all available adapters
   200	 */
   201	export class AdapterRegistry {
   202	  private adapters: Map<AgentId, TraceAdapter[]> = new Map();
   203	
   204	  /**
   205	   * Register an adapter
   206	   */
   207	  register(adapter: TraceAdapter): void {
   208	    const list = this.adapters.get(adapter.id) ?? [];
   209	    list.push(adapter);
   210	    this.adapters.set(adapter.id, list);
   211	  }
   212	
   213	  /**
   214	   * Get an adapter by ID
   215	   */
   216	  get(id: AgentId): TraceAdapter | undefined {
   217	    const list = this.adapters.get(id);
   218	    return list?.[0];
   219	  }
   220	

```

## Assistant

**Result** (success):
```
Chunk ID: 3d8c73
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 525
Output:
   280	  /**
   281	   * Get environment details using the appropriate adapter
   282	   */
   283	  async getEnvironmentDetails(trace: TraceMetadata): Promise<EnvironmentDetails> {
   284	    const adapter = this.get(trace.agentId);
   285	    if (!adapter) {
   286	      throw new Error(`No adapter found for agent: ${trace.agentId}`);
   287	    }
   288	    return adapter.getEnvironmentDetails(trace);
   289	  }
   290	
   291	
   292	  async findAdapterForTrace(trace: Pick<TraceMetadata, 'agentId' | 'sourcePath'>): Promise<TraceAdapter | undefined> {
   293	    const candidates = this.adapters.get(trace.agentId) ?? [];
   294	    return candidates[0];
   295	  }
   296	
   297	  /**
   298	   * Get event count for a trace using the appropriate adapter
   299	   */
   300	  async count(trace: TraceMetadata): Promise<number> {
   301	    const adapter = this.get(trace.agentId);
   302	    if (!adapter) {
   303	      throw new Error(`No adapter found for agent: ${trace.agentId}`);
   304	    }
   305	    return adapter.count(trace);
   306	  }
   307	
   308	  async getCurrentTraceHints(options: { cwd?: string; agentId?: AgentId } = {}): Promise<Array<CurrentTraceHint & { agentId: AgentId }>> {
   309	    const adapters = options.agentId
   310	      ? this.adapters.get(options.agentId) ?? []
   311	      : await this.getAvailable();
   312	
   313	    const hints: Array<CurrentTraceHint & { agentId: AgentId }> = [];
   314	    for (const adapter of adapters) {
   315	      try {
   316	        const hint = adapter.getCurrentTraceHint
   317	          ? await adapter.getCurrentTraceHint(options.cwd)
   318	          : null;
   319	        if (!hint) continue;
   320	        if (!hint.traceId && !hint.sourcePath) continue;
   321	        hints.push({ ...hint, agentId: adapter.id });
   322	      } catch (error) {
   323	        emitAdapterError(adapter.id, 'hint_error', error);
   324	      }
   325	    }
   326	
   327	    return hints;
   328	  }
   329	}
   330	
   331	// Global adapter registry instance
   332	export const registry = new AdapterRegistry();

```

## Assistant

**Result** (success):
```
Chunk ID: 78eba2
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 2380
Output:
     1	# Adding a New Agent
     2	
     3	This guide explains how to add support for a new coding agent to Traces.
     4	
     5	## Overview
     6	
     7	Adding a new agent requires changes in three places:
     8	1. **@traces/shared** - Add the agent ID to the canonical type
     9	2. **CLI** - Create an adapter that knows how to read the agent's session files
    10	3. **Agent skills/instructions** - Ensure `share-to-traces` is available via central skills registry
    11	
    12	## Step 1: Add Agent ID to Shared Types
    13	
    14	Edit `packages/shared/src/agent.ts`:
    15	
    16	```typescript
    17	export type AgentId =
    18	  | 'claude-code'
    19	  | 'cursor'
    20	  | 'opencode'
    21	  | 'codex'
    22	  | 'gemini-cli'
    23	  | 'pi'
    24	  | 'amp'
    25	  | 'your-new-agent';  // Add here
    26	```
    27	
    28	Build the shared package:
    29	
    30	```bash
    31	cd packages/shared && bun run build
    32	```
    33	
    34	## Step 2: Create the Adapter
    35	
    36	Create a new directory and adapter file:
    37	
    38	```
    39	cli/src/adapters/your-new-agent/
    40	└── v1.ts
    41	```
    42	
    43	Implement the adapter by extending `BaseAdapter`:
    44	
    45	```typescript
    46	import { BaseAdapter } from '../adapter.js';
    47	import type { SessionMetadata, SessionContent, SessionEvent, EnvironmentDetails } from '../../types.js';
    48	
    49	export class YourNewAgentAdapter extends BaseAdapter {
    50	  readonly agentId = 'your-new-agent' as const;
    51	
    52	  /**
    53	   * Return paths to watch for new/updated sessions.
    54	   * These are typically in the user's home directory.
    55	   */
    56	  getWatchPaths(): string[] {
    57	    return [
    58	      path.join(os.homedir(), '.your-agent', 'sessions'),
    59	    ];
    60	  }
    61	
    62	  /**
    63	   * Discover all sessions from the agent's storage.
    64	   * Return metadata for each session found.
    65	   */
    66	  async discoverSessions(): Promise<SessionMetadata[]> {
    67	    // Read session files and return metadata
    68	  }
    69	
    70	  /**
    71	   * Get the full content of a session (all events).
    72	   */
    73	  async getSessionContent(session: SessionMetadata): Promise<SessionContent> {
    74	    // Parse session file and convert to events
    75	  }
    76	
    77	  /**
    78	   * Get environment details (project path, timestamps).
    79	   */
    80	  async getEnvironmentDetails(session: SessionMetadata): Promise<EnvironmentDetails> {
    81	    // Extract from session metadata or content
    82	  }
    83	}
    84	```
    85	
    86	### Key Methods
    87	
    88	| Method | Purpose |
    89	|--------|---------|
    90	| `getWatchPaths()` | Directories to monitor for changes |
    91	| `discoverSessions()` | Find all sessions and return metadata |
    92	| `getSessionContent()` | Parse session file into events |
    93	| `getEnvironmentDetails()` | Extract project context |
    94	
    95	### Efficient `count()` Override (Required)
    96	
    97	The default `count()` calls `getTraceContent()` which loads all events into memory. Since `count()` runs on a 4-second refresh interval for every changed trace, this is a major memory leak for long-running sessions.
    98	
    99	**Every adapter MUST override `count()`** with a lightweight implementation:
   100	
   101	```typescript
   102	// JSONL-based adapters: count non-empty lines
   103	async count(trace: TraceMetadata): Promise<number> {
   104	  const content = await fs.promises.readFile(sourcePath, 'utf-8');
   105	  let count = 0;
   106	  for (const line of content.split('\n')) {
   107	    if (line.trim()) count++;
   108	  }
   109	  return count;
   110	}
   111	
   112	// SQLite-based adapters: use SQL COUNT
   113	private countEvents(sessionId: string): number | null {
   114	  return this.withSqliteDb((db) => {
   115	    const row = db.query('SELECT COUNT(*) AS c FROM message WHERE session_id = ?').get(sessionId);
   116	    return row?.c ?? 0;
   117	  });
   118	}
   119	```
   120	
   121	### Memory-Safe `subscribe()` Patterns
   122	
   123	The `subscribe()` method runs for the lifetime of a shared trace or an open detail view. Follow these rules:
   124	
   125	1. **Use `lastEventCount` instead of `seenEventIds`** — A `Set<string>` of event IDs grows monotonically and is never pruned. Use an integer count with `events.slice(lastEventCount)` instead.
   126	
   127	2. **Add change detection before re-reading** — For polling-based subscriptions, check file mtime/size before doing an expensive full content read:
   128	   ```typescript
   129	   let lastMtimeMs = fs.statSync(dbPath).mtimeMs;
   130	   // in poll loop:
   131	   const currentMtime = fs.statSync(dbPath).mtimeMs;
   132	   if (currentMtime === lastMtimeMs) continue; // skip expensive read
   133	   ```
   134	
   135	3. **Prefer incremental reads** — The Claude Code adapter's offset-based JSONL reader is the gold standard: it only reads new bytes appended since the last check. Use this pattern when the storage format supports it.
   136	
   137	4. **Bound any caches** — If the adapter caches resolved paths or other data, add LRU eviction (e.g., delete the oldest Map entry when size exceeds 500).
   138	
   139	### Event Types
   140	
   141	Convert the agent's native format to these event types:
   142	
   143	- `user_message` - User input
   144	- `agent_text` - Agent response text
   145	- `agent_thinking` - Chain of thought / reasoning
   146	- `tool_call` - Tool invocation
   147	- `tool_result` - Tool output
   148	- `error` - Error messages
   149	
   150	## Step 3: Register the Adapter
   151	
   152	Edit `cli/src/adapters/index.ts`:
   153	
   154	```typescript
   155	import { YourNewAgentAdapter } from './your-new-agent/v1.js';
   156	
   157	// In initializeAdapters():
   158	registry.register(new YourNewAgentAdapter());
   159	```
   160	
   161	Export the adapter:
   162	
   163	```typescript
   164	export { YourNewAgentAdapter } from './your-new-agent/v1.js';
   165	```
   166	
   167	## Step 4: Update CLI Types
   168	
   169	The CLI maintains its own `AgentId` type in `cli/src/types.ts` (it includes additional type-only IDs like `windsurf`, `copilot`, `manual` that aren't in `@traces/shared`). Add your new agent there too:
   170	
   171	```typescript
   172	export type AgentId =
   173	  | 'claude-code'
   174	  | 'cursor'
   175	  | 'opencode'
   176	  | 'codex'
   177	  | 'gemini-cli'
   178	  | 'pi'
   179	  | 'amp'
   180	  | 'your-new-agent';  // Add here too
   181	```
   182	
   183	## Step 5: Install Share Skill via Traces CLI (Required)
   184	
   185	New adapters must ensure the central `share-to-traces` skill is installed for the runtime.
   186	
   187	```bash
   188	traces setup
   189	# or: traces setup skills
   190	```
   191	
   192	Install for a specific runtime only:
   193	
   194	```bash
   195	traces setup skills --agent <agent-id>
   196	```
   197	
   198	Remove installed skills when needed:
   199	
   200	```bash
   201	traces remove skills
   202	# or: traces remove skills --global
   203	```
   204	
   205	Use per-agent wrappers only if a runtime cannot consume the shared skill directly.
   206	
   207	### Required skill behavior
   208	
   209	- Trigger phrases:
   210	  - `share to traces`
   211	  - `publish this trace`
   212	  - `share this session`
   213	- Canonical command:
   214	
   215	```bash
   216	traces share --cwd "$PWD" --agent <agent-id> --json
   217	```
   218	
   219	- Prefer exact current-session hints when available:
   220	
   221	```bash
   222	TRACES_CURRENT_TRACE_ID="<id>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
   223	TRACES_CURRENT_SOURCE_PATH="<path>" traces share --cwd "$PWD" --agent <agent-id|auto> --json
   224	```
   225	
   226	- Fallback selector only when exact current-session context is unavailable:
   227	
   228	```bash
   229	traces share --cwd "$PWD" --agent <agent-id|auto> --json
   230	```
   231	
   232	- Error mapping:
   233	  - `AUTH_REQUIRED` -> ask user to run `traces login`
   234	  - `TRACE_NOT_FOUND` -> suggest explicit selector
   235	  - `INVALID_ARGUMENTS` -> show one-line usage hint
   236	  - `UPLOAD_FAILED` -> suggest retry
   237	
   238	### Adapter completion rule
   239	
   240	An adapter is not complete until:
   241	
   242	- adapter discovery/parsing works,
   243	- sync works,
   244	- central `share-to-traces` skill is installed,
   245	- skill prefers exact current-session hint (`TRACES_CURRENT_TRACE_ID` or `TRACES_CURRENT_SOURCE_PATH`) before cwd fallback,
   246	- trigger phrase is manually verified,
   247	- skill returns URL from `traces share ... --json`.
   248	
   249	## Testing
   250	
   251	1. Run CLI tests: `cd cli && bun test`
   252	2. Manual test: `traces` should discover sessions from the new agent
   253	3. Verify sync: Sessions should upload and display correctly in the frontend
   254	4. Verify installed share skill can execute `traces share --cwd "$PWD" --agent <agent-id> --json` and return URL
   255	
   256	### Sandbox caveats (local dev)
   257	
   258	- Some agent sandboxes cannot write `~/.traces`; set `TRACES_EVENTSTORE=/tmp/traces-share.db` for testing.
   259	- Some sandboxes cannot access local endpoints (for example `http://localhost:3211`) without elevated permissions.
   260	- If share fails with connectivity in a sandbox, rerun with escalation or run from your normal terminal.

```

## Assistant

**Result** (success):
```
Chunk ID: e129fd
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1322
Output:
   528	        message: "Invalid value for --key. Provide a non-empty bearer token.",
   529	      },
   530	    };
   531	  }
   532	
   533	  // When --cwd is used but TRACES_CURRENT_TRACE_ID is set in env,
   534	  // report the selector as env-hint for accurate attribution.
   535	  let selector = selectors[0];
   536	  if (selector === "cwd") {
   537	    const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
   538	    if (envTraceId) {
   539	      selector = "env-hint";
   540	    }
   541	  }
   542	
   543	  return { ok: true, selector };
   544	}
   545	
   546	async function selectTrace(
   547	  traces: ShareTrace[],
   548	  options: ShareCommandOptions,
   549	  selector: Selector,
   550	  runtime: ShareRuntime
   551	): Promise<ShareTrace | null> {
   552	  if (selector === "trace-id") {
   553	    const filtered = filterByAgent(traces, options.agent);
   554	    return filtered.find((trace) => trace.id === options.traceId) ?? null;
   555	  }
   556	
   557	  if (selector === "source-path") {
   558	    const target = normalizePath(options.sourcePath);
   559	    const filtered = filterByAgent(traces, options.agent);
   560	    return (
   561	      filtered.find((trace) => normalizePath(trace.sourcePath) === target) ?? null
   562	    );
   563	  }
   564	
   565	  // env-hint or cwd selector — try hints first
   566	  const cwd = normalizePath(options.cwd);
   567	  const hintResult = await selectTraceFromHints(traces, options, cwd, runtime);
   568	
   569	  if (hintResult?.found) return hintResult.found;
   570	
   571	  // If an env var hint was explicitly set but didn't match any scanned trace,
   572	  // do NOT fall back to cwd matching — the caller should retry after refresh
   573	  // or fail explicitly. Silently sharing a different session is worse than failing.
   574	  if (hintResult?.envHintSet) return null;
   575	
   576	  const filtered = filterByAgent(traces, options.agent).filter((trace) => {
   577	    const traceDir = normalizePath(trace.directory);
   578	    if (traceDir && isSameOrChildPath(traceDir, cwd)) return true;
   579	    const sourcePath = normalizePath(trace.sourcePath);
   580	    return sourcePath ? isSameOrChildPath(sourcePath, cwd) : false;
   581	  });
   582	
   583	  if (filtered.length === 0) {
   584	    const fallback = selectAgentLatestWithoutCwdMatch(traces, options.agent);
   585	    if (fallback) return fallback;
   586	    return null;
   587	  }
   588	
   589	  return filtered.sort(compareTraceOrder)[0] ?? null;
   590	}
   591	
   592	type HintResult = {
   593	  found: ShareTrace | null;
   594	  /** True when TRACES_CURRENT_TRACE_ID (or similar env var) was set but no match was found. */
   595	  envHintSet: boolean;
   596	  /** The env var value that was set, for error messages. */
   597	  envTraceId?: string;
   598	};
   599	
   600	async function selectTraceFromHints(
   601	  traces: ShareTrace[],
   602	  options: ShareCommandOptions,
   603	  cwd: string | undefined,
   604	  runtime: ShareRuntime
   605	): Promise<HintResult | null> {
   606	  const filtered = filterByAgent(traces, options.agent);
   607	
   608	  const envTraceId = process.env.TRACES_CURRENT_TRACE_ID?.trim() || process.env.TRACE_ID?.trim();
   609	  if (envTraceId) {
   610	    // When filtered list is empty, still report that the hint was set
   611	    const match = filtered.find((trace) => trace.id === envTraceId) ?? null;
   612	    if (match && traceMatchesCwd(match, cwd)) {
   613	      return { found: match, envHintSet: true, envTraceId };
   614	    }
   615	    // Hint was set but no match — don't fall through to other heuristics
   616	    return { found: null, envHintSet: true, envTraceId };
   617	  }
   618	
   619	  const envSourcePath =
   620	    process.env.TRACES_CURRENT_SOURCE_PATH?.trim() || process.env.TRACES_SOURCE_PATH?.trim();
   621	  if (envSourcePath) {
   622	    const normalized = normalizePath(envSourcePath);
   623	    const match = filtered.find((trace) => normalizePath(trace.sourcePath) === normalized) ?? null;
   624	    if (match && traceMatchesCwd(match, cwd)) {
   625	      return { found: match, envHintSet: true };
   626	    }
   627	    return { found: null, envHintSet: true };
   628	  }
   629	
   630	  if (filtered.length === 0) return null;
   631	
   632	  const hintAgent = options.agent && options.agent !== "auto" ? (options.agent as AgentId) : undefined;
   633	  const hints = await runtime.getCurrentTraceHints({ cwd, agentId: hintAgent });
   634	  if (hints.length === 0) return null;
   635	
   636	  const hintMatches = hints
   637	    .map((hint) => {
   638	      if (hint.traceId) {
   639	        return filtered.find(
   640	          (trace) => trace.agentId === hint.agentId && trace.id === hint.traceId
   641	        );
   642	      }
   643	      if (hint.sourcePath) {
   644	        const normalized = normalizePath(hint.sourcePath);
   645	        return filtered.find(
   646	          (trace) =>
   647	            trace.agentId === hint.agentId && normalizePath(trace.sourcePath) === normalized
   648	        );
   649	      }
   650	      return undefined;
   651	    })
   652	    .filter((trace): trace is ShareTrace => Boolean(trace))

```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "nl -ba cli/src/types.ts | sed -n '1,140p'",
  "max_output_tokens": 4000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

### Tool: exec_command

**Args:**
```json
{
  "cmd": "nl -ba docs/cli.md | sed -n '84,210p'",
  "max_output_tokens": 5000,
  "workdir": "/Users/tarunsachdeva/code/traces",
  "yield_time_ms": 1000
}
```

## Assistant

**Result** (success):
```
Chunk ID: 6053aa
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 898
Output:
     1	/**
     2	 * Core types for the Traces CLI
     3	 */
     4	
     5	import type { VisibilityValue } from '@traces/shared';
     6	
     7	// Supported agent IDs
     8	export type AgentId = 
     9	  | 'claude-code' 
    10	  | 'cursor' 
    11	  | 'opencode'
    12	  | 'windsurf' 
    13	  | 'copilot' 
    14	  | 'gemini-cli' 
    15	  | 'codex' 
    16	  | 'pi'
    17	  | 'amp'
    18	  | 'cline'
    19	  | 'hermes'
    20	  | 'manual';
    21	
    22	// Model identifiers
    23	export type ModelId = string;
    24	
    25	// Trace visibility
    26	export type TraceVisibility = VisibilityValue;
    27	
    28	// =============================================================================
    29	// Event-Sourced Trace Model
    30	// =============================================================================
    31	
    32	/**
    33	 * Base interface for all trace events
    34	 */
    35	interface BaseEvent {
    36	  id: string;
    37	  timestamp: number;
    38	  order: number;
    39	}
    40	
    41	/**
    42	 * User sent a message
    43	 */
    44	export interface UserMessageEvent extends BaseEvent {
    45	  type: 'user_message';
    46	  content: string;
    47	}
    48	
    49	/**
    50	 * Agent produced text output
    51	 */
    52	export interface AgentTextEvent extends BaseEvent {
    53	  type: 'agent_text';
    54	  content: string;
    55	  modelId?: string;
    56	}
    57	
    58	/**
    59	 * Agent's internal thinking/reasoning (extended thinking, chain of thought)
    60	 */
    61	export interface AgentThinkingEvent extends BaseEvent {
    62	  type: 'agent_thinking';
    63	  content: string;
    64	  durationMs?: number;
    65	}
    66	
    67	/**
    68	 * Agent initiated a tool call
    69	 */
    70	export interface ToolCallEvent extends BaseEvent {
    71	  type: 'tool_call';
    72	  callId: string;
    73	  toolName: string;
    74	  args: Record<string, unknown>;
    75	}
    76	
    77	/**
    78	 * Tool returned a result
    79	 */
    80	export interface ToolResultEvent extends BaseEvent {
    81	  type: 'tool_result';
    82	  callId: string;
    83	  toolName: string;
    84	  output: string;
    85	  status: 'success' | 'error';
    86	}
    87	
    88	/**
    89	 * An error occurred
    90	 */
    91	export interface ErrorEvent extends BaseEvent {
    92	  type: 'error';
    93	  message: string;
    94	}
    95	
    96	/**
    97	 * Union of all event types
    98	 */
    99	export type TraceEvent =
   100	  | UserMessageEvent
   101	  | AgentTextEvent
   102	  | AgentThinkingEvent
   103	  | ToolCallEvent
   104	  | ToolResultEvent
   105	  | ErrorEvent;
   106	
   107	/**
   108	 * Event type discriminator
   109	 */
   110	export type TraceEventType = TraceEvent['type'];
   111	
   112	/**
   113	 * Core trace metadata (stored in EventStore)
   114	 */
   115	export interface TraceMetadata {
   116	  id: string;
   117	  agentId: AgentId;
   118	  title: string;
   119	  preview: string;
   120	  timestamp: number;
   121	  directory?: string;
   122	  sourcePath?: string;
   123	  sharedUrl?: string;
   124	  sharedVisibility?: TraceVisibility;
   125	  modelId?: ModelId;
   126	  gitRemoteUrl?: string;
   127	  gitBranch?: string;
   128	  gitRef?: string;
   129	}
   130	
   131	/**
   132	 * Environment details - context about where/when trace ran (derived from content)
   133	 */
   134	export interface EnvironmentDetails {
   135	  projectPath?: string;
   136	  projectName?: string;
   137	  createdAt?: string;
   138	  updatedAt?: string;
   139	}
   140	

```

## Assistant

**Result** (success):
```
Chunk ID: 2c8253
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1591
Output:
    84	### Troubleshooting
    85	
    86	**Database corruption**: If the TUI shows errors or traces don't load correctly, run:
    87	```bash
    88	traces reset
    89	```
    90	This deletes the local SQLite database and forces a full resync on next launch.
    91	
    92	**Diagnose issues**: Run the doctor command to check installation, database, network, and auth:
    93	```bash
    94	traces doctor
    95	```
    96	
    97	**Check current status**: View database size, trace count, and auth status:
    98	```bash
    99	traces status
   100	```
   101	
   102	**Debug logging**: Pass `--debug <path>` to write a timestamped log of internal events (keypresses, state changes, errors). The flag can appear anywhere in the command and works with all subcommands:
   103	```bash
   104	traces --debug /tmp/traces-debug.log
   105	traces share --trace-id abc123 --debug /tmp/share-debug.log
   106	```
   107	
   108	## Supported Agents
   109	
   110	| Agent ID | Adapter | Storage Format | Storage Location |
   111	|----------|---------|---------------|-----------------|
   112	| `claude-code` | `ClaudeCodeAdapter` | JSONL | `~/.claude/` |
   113	| `cursor` | `CursorAdapter` | SQLite + legacy JSON | `~/Library/Application Support/Cursor/` |
   114	| `opencode` | `OpenCodeAdapter` | SQLite + legacy JSON | `~/.local/share/opencode/` |
   115	| `codex` | `CodexAdapter` | JSONL + JSON | `~/.codex/` |
   116	| `gemini-cli` | `GeminiCliAdapter` | JSON | `~/.gemini/tmp/` |
   117	| `pi` | `PiAdapter` | JSONL | `~/.pi/agent/sessions/` |
   118	| `amp` | `AmpAdapter` | JSON | `~/.local/share/amp/threads/` |
   119	
   120	Type-only IDs (no adapter): `windsurf`, `copilot`, `manual`.
   121	
   122	## Data Flow
   123	
   124	```
   125	┌──────────────────────────┐
   126	│          TUI             │
   127	│  src/tui/app.tsx         │
   128	└────────────┬─────────────┘
   129	             │
   130	             ▼
   131	┌──────────────────────────┐
   132	│     TraceController      │
   133	│  src/core/trace-         │
   134	│  controller.ts           │
   135	└────────────┬─────────────┘
   136	             │
   137	             ▼
   138	┌──────────────────────────┐
   139	│      Trace (Model)       │
   140	│  src/core/trace.ts       │
   141	└────────────┬─────────────┘
   142	             │
   143	             ▼
   144	┌──────────────────────────┐
   145	│         Adapters         │
   146	│   src/adapters/*         │
   147	└────────────┬─────────────┘
   148	             │
   149	             ▼
   150	┌──────────────────────────┐
   151	│ Agent storage (files,    │
   152	│ sqlite, jsonl, etc.)     │
   153	└──────────────────────────┘
   154	```
   155	
   156	## Roles and boundaries
   157	
   158	**TUI (View)**
   159	- Only calls methods on `TraceController`.
   160	- Never reads adapters directly.
   161	- Never touches EventStore for detail view data.
   162	
   163	**TraceController (Controller)**
   164	- Single entry point for UI actions.
   165	- Merges adapter traces with EventStore metadata.
   166	- Creates `Trace` models for content reads.
   167	- Owns subscription lifecycle for live updates.
   168	
   169	**Trace (Model)**
   170	- Wraps adapter + store for a single trace.
   171	- `getContent()` delegates to adapter.
   172	- Stores metadata changes in EventStore when needed.
   173	
   174	**Adapters (Data source)**
   175	- Parse agent storage into `TraceContent` + `TraceEvent`.
   176	- Provide live updates via `subscribe()`.
   177	- No persistence responsibilities.
   178	
   179	**EventStore (Persistence)**
   180	- Stores trace metadata + shared state.
   181	- Acts as a sync cache for shared traces only.
   182	- Not used for detail view content.
   183	
   184	**TraceIndexer (Discovery)**
   185	- Background service for incremental trace discovery.
   186	- Uses cursor-based scanning to avoid redundant work.
   187	- Stores index state in the `indexes` SQLite table per adapter.
   188	- Supports history-first discovery (scan from tail of JSONL files).
   189	
   190	**Services**
   191	- API client, clipboard, updates, request history.
   192	- Called by the controller or TUI when needed.
   193	
   194	## Rules of access
   195	
   196	- **TUI never calls adapters directly.**
   197	- **Only TraceController may access adapters.**
   198	- EventStore is for **metadata + sync cache**, not UI detail rendering.
   199	
   200	## Empty Session Guards
   201	
   202	Sessions can end up with 0 events for legitimate reasons (e.g. JSONL files containing only metadata entries like `summary` or `file-history-snapshot`). To prevent these from being shared as empty traces, guards exist at three layers:
   203	
   204	| Layer | File | Behavior |
   205	|-------|------|----------|
   206	| **TUI** | `src/tui/hooks/useAppState.ts` | Shows user-friendly error before share attempt; retries hydration up to 3 times in case the adapter hasn't finished parsing |
   207	| **Controller** | `src/core/trace-controller.ts` | `performShare` rejects with a structured error if content has 0 events after adapter returns |
   208	| **API client** | `src/services/api.ts` | `backfillTrace` bails early with a warning if the transformed message list is empty, preventing a server round-trip |
   209	
   210	These guards are defense-in-depth -- any single layer is sufficient to prevent an empty trace from reaching the server. Adapters do **not** need to implement their own empty-session guard; they should parse honestly and populate the `ParseDiagnostics` object passed by `BaseAdapter.getTraceContent()` to report what was skipped or unrecognized. Diagnostics are emitted to Sentry structured logs (`cli.adapter.empty_parse`, `cli.adapter.unhandled_types`).

```