Implemented files command with coalesced file operations
Public
Implemented files command with coalesced file operations
Agent
Pi
Model
Claude Opus 4.5 (latest)
Started
Jan 29, 1:19 AM
Messages54
Downloads0
Created files command to list file operations.
BuildIdentified missing file paths in tool results.
UnderstandMatched tool calls with results to get file paths.
EditTested command and confirmed correct behavior.
VerifyCommitted and pushed final changes.
Cleanup
we have .pi/extensions/diff.ts, i want a files command in files.ts. it should:
when selecting a file, it should just open straight in vs code
The user wants me to create a new extension file files.ts that:
Let me first look at the existing diff.ts extension to understand the pattern, and also understand the session/message structure to know how to extract tool calls.
Now I understand the extension structure. I need to:
Let me check the session types to understand the entry structure:
Now I understand the session structure. Tool results are stored as ToolResultMessage within SessionMessageEntry entries. The toolName field tells me if it's "read", "write", or "edit", and I need to look at the tool's input parameters to get the file path.
Let me look at how tool calls are structured to understand how to get the file path from tool calls:
Now I have enough context. Let me create the files.ts extension:
Let me run the check to make sure there are no TypeScript errors:
>cd /Users/badlogic/workspaces/pi-mono && npm run check 2>&1> pi-monorepo@0.0.3 check
> biome check --write . && tsgo --noEmit && cd packages/web-ui && npm run check
Checked 444 files in 297ms. No fixes applied.
> @mariozechner/pi-web-ui@0.50.1 check
> biome check --write . && tsc --noEmit && cd example && biome check --write . && tsc --noEmit
Checked 73 files in 37ms. No fixes applied.
Checked 3 files in 8ms. No fixes applied.Check passes. The extension is complete.
The files.ts extension:
toolResult messages with toolName of "read", "write", or "edit"Created .pi/extensions/files.ts. The /files command:
read, write, and edit tool resultsOperations are color-coded: R (muted), W (green), E (yellow).
i just did /reload, and i get No files read/written/edited in this session ...
session file: /Users/badlogic/.pi/agent/sessions/--Users-badlogic-workspaces-pi-mono--/2026-01-29T01-19-15-101Z_6c38fda 3-22df-41f5-a3a5-25eb84998554.jsonl
The user is saying that after /reload, the /files command shows no files, but clearly there have been file operations in the session. Let me check the session file to understand the actual structure of the tool result entries.
>cat "/Users/badlogic/.pi/agent/sessions/--Users-badlogic-workspaces-pi-mono--/2026-01-29T01-19-15-101Z_6c38fda3-22df-41f5-a3a5-25eb84998554.jsonl" | head -100{"type":"message","id":"3016bfbe","parentId":"37cf929a","timestamp":"2026-01-29T01:21:26.426Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"Now I understand the extension structure. I need to:\n1. Look at the session branch to extract tool calls (read, write, edit)\n2. Coalesce entries by file path\n3. Sort by most recent timestamp\n4. Show in SelectList UI\n5. Open in VS Code on selection\n\nLet me check the session types to understand the entry structure:","thinkingSignature":"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"},{"type":"toolCall","id":"toolu_01F1qqSfh12f2rEtRhfUMKsv","name":"read","arguments":{"path":"/Users/badlogic/workspaces/pi-mono/packages/coding-agent/docs/session.md"}}],"api":"anthropic-messages","provider":"anthropic","model":"claude-opus-4-5","usage":{"input":8,"output":163,"cacheRead":5543,"cacheWrite":17117,"totalTokens":22831,"cost":{"input":0.00004,"output":0.0040750000000000005,"cacheRead":0.0027714999999999997,"cacheWrite":0.10698125,"total":0.11386775}},"stopReason":"toolUse","timestamp":1769649681649}}
{"type":"message","id":"f5f96696","parentId":"3016bfbe","timestamp":"2026-01-29T01:21:26.434Z","message":{"role":"toolResult","toolCallId":"toolu_01F1qqSfh12f2rEtRhfUMKsv","toolName":"read","content":[{"type":"text","text":"# Session File Format\n\nSessions are stored as JSONL (JSON Lines) files. Each line is a JSON object with a `type` field. Session entries form a tree structure via `id`/`parentId` fields, enabling in-place branching without creating new files.\n\n## File Location\n\n```\n~/.pi/agent/sessions/--<path>--/<timestamp>_<uuid>.jsonl\n```\n\nWhere `<path>` is the working directory with `/` replaced by `-`.\n\n## Deleting Sessions\n\nSessions can be removed by deleting their `.jsonl` files under `~/.pi/agent/sessions/`.\n\nPi also supports deleting sessions interactively from `/resume` (select a session and press `Ctrl+D`, then confirm). When available, pi uses the `trash` CLI to avoid permanent deletion.\n\n## Session Version\n\nSessions have a version field in the header:\n\n- **Version 1**: Linear entry sequence (legacy, auto-migrated on load)\n- **Version 2**: Tree structure with `id`/`parentId` linking\n- **Version 3**: Renamed `hookMessage` role to `custom` (extensions unification)\n\nExisting sessions are automatically migrated to the current version (v3) when loaded.\n\n## Source Files\n\nSource on GitHub ([pi-mono](https://github.com/badlogic/pi-mono)):\n- [`packages/coding-agent/src/core/session-manager.ts`](https://github.com/badlogic/pi-mono/blob/main/packages/coding-agent/src/core/session-manager.ts) - Session entry types and SessionManager\n- [`packages/coding-agent/src/core/messages.ts`](https://github.com/badlogic/pi-mono/blob/main/packages/coding-agent/src/core/messages.ts) - Extended message types (BashExecutionMessage, CustomMessage, etc.)\n- [`packages/ai/src/types.ts`](https://github.com/badlogic/pi-mono/blob/main/packages/ai/src/types.ts) - Base message types (UserMessage, AssistantMessage, ToolResultMessage)\n- [`packages/agent/src/types.ts`](https://github.com/badlogic/pi-mono/blob/main/packages/agent/src/types.ts) - AgentMessage union type\n\nFor TypeScript definitions in your project, inspect `node_modules/@mariozechner/pi-coding-agent/dist/` and `node_modules/@mariozechner/pi-ai/dist/`.\n\n## Message Types\n\nSession entries contain `AgentMessage` objects. Understanding these types is essential for parsing sessions and writing extensions.\n\n### Content Blocks\n\nMessages contain arrays of typed content blocks:\n\n```typescript\ninterface TextContent {\n type: \"text\";\n text: string;\n}\n\ninterface ImageContent {\n type: \"image\";\n data: string; // base64 encoded\n mimeType: string; // e.g., \"image/jpeg\", \"image/png\"\n}\n\ninterface ThinkingContent {\n type: \"thinking\";\n thinking: string;\n}\n\ninterface ToolCall {\n type: \"toolCall\";\n id: string;\n name: string;\n arguments: Record<string, any>;\n}\n```\n\n### Base Message Types (from pi-ai)\n\n```typescript\ninterface UserMessage {\n role: \"user\";\n content: string | (TextContent | ImageContent)[];\n timestamp: number; // Unix ms\n}\n\ninterface AssistantMessage {\n role: \"assistant\";\n content: (TextContent | ThinkingContent | ToolCall)[];\n api: string;\n provider: string;\n model: string;\n usage: Usage;\n stopReason: \"stop\" | \"length\" | \"toolUse\" | \"error\" | \"aborted\";\n errorMessage?: string;\n timestamp: number;\n}\n\ninterface ToolResultMessage {\n role: \"toolResult\";\n toolCallId: string;\n toolName: string;\n content: (TextContent | ImageContent)[];\n details?: any; // Tool-specific metadata\n isError: boolean;\n timestamp: number;\n}\n\ninterface Usage {\n input: number;\n output: number;\n cacheRead: number;\n cacheWrite: number;\n totalTokens: number;\n cost: {\n input: number;\n output: number;\n cacheRead: number;\n cacheWrite: number;\n total: number;\n };\n}\n```\n\n### Extended Message Types (from pi-coding-agent)\n\n```typescript\ninterface BashExecutionMessage {\n role: \"bashExecution\";\n command: string;\n output: string;\n exitCode: number | undefined;\n cancelled: boolean;\n truncated: boolean;\n fullOutputPath?: string;\n excludeFromContext?: boolean; // true for !! prefix commands\n timestamp: number;\n}\n\ninterface CustomMessage {\n role: \"custom\";\n customType: string; // Extension identifier\n content: string | (TextContent | ImageContent)[];\n display: boolean; // Show in TUI\n details?: any; // Extension-specific metadata\n timestamp: number;\n}\n\ninterface BranchSummaryMessage {\n role: \"branchSummary\";\n summary: string;\n fromId: string; // Entry we branched from\n timestamp: number;\n}\n\ninterface CompactionSummaryMessage {\n role: \"compactionSummary\";\n summary: string;\n tokensBefore: number;\n timestamp: number;\n}\n```\n\n### AgentMessage Union\n\n```typescript\ntype AgentMessage =\n | UserMessage\n | AssistantMessage\n | ToolResultMessage\n | BashExecutionMessage\n | CustomMessage\n | BranchSummaryMessage\n | CompactionSummaryMessage;\n```\n\n## Entry Base\n\nAll entries (except `SessionHeader`) extend `SessionEntryBase`:\n\n```typescript\ninterface SessionEntryBase {\n type: string;\n id: string; // 8-char hex ID\n parentId: string | null; // Parent entry ID (null for first entry)\n timestamp: string; // ISO timestamp\n}\n```\n\n## Entry Types\n\n### SessionHeader\n\nFirst line of the file. Metadata only, not part of the tree (no `id`/`parentId`).\n\n```json\n{\"type\":\"session\",\"version\":3,\"id\":\"uuid\",\"timestamp\":\"2024-12-03T14:00:00.000Z\",\"cwd\":\"/path/to/project\"}\n```\n\nFor sessions with a parent (created via `/fork` or `newSession({ parentSession })`):\n\n```json\n{\"type\":\"session\",\"version\":3,\"id\":\"uuid\",\"timestamp\":\"2024-12-03T14:00:00.000Z\",\"cwd\":\"/path/to/project\",\"parentSession\":\"/path/to/original/session.jsonl\"}\n```\n\n### SessionMessageEntry\n\nA message in the conversation. The `message` field contains an `AgentMessage`.\n\n```json\n{\"type\":\"message\",\"id\":\"a1b2c3d4\",\"parentId\":\"prev1234\",\"timestamp\":\"2024-12-03T14:00:01.000Z\",\"message\":{\"role\":\"user\",\"content\":\"Hello\"}}\n{\"type\":\"message\",\"id\":\"b2c3d4e5\",\"parentId\":\"a1b2c3d4\",\"timestamp\":\"2024-12-03T14:00:02.000Z\",\"message\":{\"role\":\"assistant\",\"content\":[{\"type\":\"text\",\"text\":\"Hi!\"}],\"provider\":\"anthropic\",\"model\":\"claude-sonnet-4-5\",\"usage\":{...},\"stopReason\":\"stop\"}}\n{\"type\":\"message\",\"id\":\"c3d4e5f6\",\"parentId\":\"b2c3d4e5\",\"timestamp\":\"2024-12-03T14:00:03.000Z\",\"message\":{\"role\":\"toolResult\",\"toolCallId\":\"call_123\",\"toolName\":\"bash\",\"content\":[{\"type\":\"text\",\"text\":\"output\"}],\"isError\":false}}\n```\n\n### ModelChangeEntry\n\nEmitted when the user switches models mid-session.\n\n```json\n{\"type\":\"model_change\",\"id\":\"d4e5f6g7\",\"parentId\":\"c3d4e5f6\",\"timestamp\":\"2024-12-03T14:05:00.000Z\",\"provider\":\"openai\",\"modelId\":\"gpt-4o\"}\n```\n\n### ThinkingLevelChangeEntry\n\nEmitted when the user changes the thinking/reasoning level.\n\n```json\n{\"type\":\"thinking_level_change\",\"id\":\"e5f6g7h8\",\"parentId\":\"d4e5f6g7\",\"timestamp\":\"2024-12-03T14:06:00.000Z\",\"thinkingLevel\":\"high\"}\n```\n\n### CompactionEntry\n\nCreated when context is compacted. Stores a summary of earlier messages.\n\n```json\n{\"type\":\"compaction\",\"id\":\"f6g7h8i9\",\"parentId\":\"e5f6g7h8\",\"timestamp\":\"2024-12-03T14:10:00.000Z\",\"summary\":\"User discussed X, Y, Z...\",\"firstKeptEntryId\":\"c3d4e5f6\",\"tokensBefore\":50000}\n```\n\nOptional fields:\n- `details`: Implementation-specific data (e.g., `{ readFiles: string[], modifiedFiles: string[] }` for default, or custom data for extensions)\n- `fromHook`: `true` if generated by an extension, `false`/`undefined` if pi-generated (legacy field name)\n\n### BranchSummaryEntry\n\nCreated when switching branches via `/tree` with an LLM generated summary of the left branch up to the common ancestor. Captures context from the abandoned path.\n\n```json\n{\"type\":\"branch_summary\",\"id\":\"g7h8i9j0\",\"parentId\":\"a1b2c3d4\",\"timestamp\":\"2024-12-03T14:15:00.000Z\",\"fromId\":\"f6g7h8i9\",\"summary\":\"Branch explored approach A...\"}\n```\n\nOptional fields:\n- `details`: File tracking data (`{ readFiles: string[], modifiedFiles: string[] }`) for default, or custom data for extensions\n- `fromHook`: `true` if generated by an extension, `false`/`undefined` if pi-generated (legacy field name)\n\n### CustomEntry\n\nExtension state persistence. Does NOT participate in LLM context.\n\n```json\n{\"type\":\"custom\",\"id\":\"h8i9j0k1\",\"parentId\":\"g7h8i9j0\",\"timestamp\":\"2024-12-03T14:20:00.000Z\",\"customType\":\"my-extension\",\"data\":{\"count\":42}}\n```\n\nUse `customType` to identify your extension's entries on reload.\n\n### CustomMessageEntry\n\nExtension-injected messages that DO participate in LLM context.\n\n```json\n{\"type\":\"custom_message\",\"id\":\"i9j0k1l2\",\"parentId\":\"h8i9j0k1\",\"timestamp\":\"2024-12-03T14:25:00.000Z\",\"customType\":\"my-extension\",\"content\":\"Injected context...\",\"display\":true}\n```\n\nFields:\n- `content`: String or `(TextContent | ImageContent)[]` (same as UserMessage)\n- `display`: `true` = show in TUI with distinct styling, `false` = hidden\n- `details`: Optional extension-specific metadata (not sent to LLM)\n\n### LabelEntry\n\nUser-defined bookmark/marker on an entry.\n\n```json\n{\"type\":\"label\",\"id\":\"j0k1l2m3\",\"parentId\":\"i9j0k1l2\",\"timestamp\":\"2024-12-03T14:30:00.000Z\",\"targetId\":\"a1b2c3d4\",\"label\":\"checkpoint-1\"}\n```\n\nSet `label` to `undefined` to clear a label.\n\n### SessionInfoEntry\n\nSession metadata (e.g., user-defined display name). Set via `/name` command or `pi.setSessionName()` in extensions.\n\n```json\n{\"type\":\"session_info\",\"id\":\"k1l2m3n4\",\"parentId\":\"j0k1l2m3\",\"timestamp\":\"2024-12-03T14:35:00.000Z\",\"name\":\"Refactor auth module\"}\n```\n\nThe session name is displayed in the session selector (`/resume`) instead of the first message when set.\n\n## Tree Structure\n\nEntries form a tree:\n- First entry has `parentId: null`\n- Each subsequent entry points to its parent via `parentId`\n- Branching creates new children from an earlier entry\n- The \"leaf\" is the current position in the tree\n\n```\n[user msg] ─── [assistant] ─── [user msg] ─── [assistant] ─┬─ [user msg] ← current leaf\n │\n └─ [branch_summary] ─── [user msg] ← alternate branch\n```\n\n## Context Building\n\n`buildSessionContext()` walks from the current leaf to the root, producing the message list for the LLM:\n\n1. Collects all entries on the path\n2. Extracts current model and thinking level settings\n3. If a `CompactionEntry` is on the path:\n - Emits the summary first\n - Then messages from `firstKeptEntryId` to compaction\n - Then messages after compaction\n4. Converts `BranchSummaryEntry` and `CustomMessageEntry` to appropriate message formats\n\n## Parsing Example\n\n```typescript\nimport { readFileSync } from \"fs\";\n\nconst lines = readFileSync(\"session.jsonl\", \"utf8\").trim().split(\"\\n\");\n\nfor (const line of lines) {\n const entry = JSON.parse(line);\n\n switch (entry.type) {\n case \"session\":\n console.log(`Session v${entry.version ?? 1}: ${entry.id}`);\n break;\n case \"message\":\n console.log(`[${entry.id}] ${entry.message.role}: ${JSON.stringify(entry.message.content)}`);\n break;\n case \"compaction\":\n console.log(`[${entry.id}] Compaction: ${entry.tokensBefore} tokens summarized`);\n break;\n case \"branch_summary\":\n console.log(`[${entry.id}] Branch from ${entry.fromId}`);\n break;\n case \"custom\":\n console.log(`[${entry.id}] Custom (${entry.customType}): ${JSON.stringify(entry.data)}`);\n break;\n case \"custom_message\":\n console.log(`[${entry.id}] Extension message (${entry.customType}): ${entry.content}`);\n break;\n case \"label\":\n console.log(`[${entry.id}] Label \"${entry.label}\" on ${entry.targetId}`);\n break;\n case \"model_change\":\n console.log(`[${entry.id}] Model: ${entry.provider}/${entry.modelId}`);\n break;\n case \"thinking_level_change\":\n console.log(`[${entry.id}] Thinking: ${entry.thinkingLevel}`);\n break;\n }\n}\n```\n\n## SessionManager API\n\nKey methods for working with sessions programmatically.\n\n### Static Creation Methods\n- `SessionManager.create(cwd, sessionDir?)` - New session\n- `SessionManager.open(path, sessionDir?)` - Open existing session file\n- `SessionManager.continueRecent(cwd, sessionDir?)` - Continue most recent or create new\n- `SessionManager.inMemory(cwd?)` - No file persistence\n- `SessionManager.forkFrom(sourcePath, targetCwd, sessionDir?)` - Fork session from another project\n\n### Static Listing Methods\n- `SessionManager.list(cwd, sessionDir?, onProgress?)` - List sessions for a directory\n- `SessionManager.listAll(onProgress?)` - List all sessions across all projects\n\n### Instance Methods - Session Management\n- `newSession(options?)` - Start a new session (options: `{ parentSession?: string }`)\n- `setSessionFile(path)` - Switch to a different session file\n- `createBranchedSession(leafId)` - Extract branch to new session file\n\n### Instance Methods - Appending (all return entry ID)\n- `appendMessage(message)` - Add message\n- `appendThinkingLevelChange(level)` - Record thinking change\n- `appendModelChange(provider, modelId)` - Record model change\n- `appendCompaction(summary, firstKeptEntryId, tokensBefore, details?, fromHook?)` - Add compaction\n- `appendCustomEntry(customType, data?)` - Extension state (not in context)\n- `appendSessionInfo(name)` - Set session display name\n- `appendCustomMessageEntry(customType, content, display, details?)` - Extension message (in context)\n- `appendLabelChange(targetId, label)` - Set/clear label\n\n### Instance Methods - Tree Navigation\n- `getLeafId()` - Current position\n- `getLeafEntry()` - Get current leaf entry\n- `getEntry(id)` - Get entry by ID\n- `getBranch(fromId?)` - Walk from entry to root\n- `getTree()` - Get full tree structure\n- `getChildren(parentId)` - Get direct children\n- `getLabel(id)` - Get label for entry\n- `branch(entryId)` - Move leaf to earlier entry\n- `resetLeaf()` - Reset leaf to null (before any entries)\n- `branchWithSummary(entryId, summary, details?, fromHook?)` - Branch with context summary\n\n### Instance Methods - Context & Info\n- `buildSessionContext()` - Get messages, thinkingLevel, and model for LLM\n- `getEntries()` - All entries (excluding header)\n- `getHeader()` - Session header metadata\n- `getSessionName()` - Get display name from latest session_info entry\n- `getCwd()` - Working directory\n- `getSessionDir()` - Session storage directory\n- `getSessionId()` - Session UUID\n- `getSessionFile()` - Session file path (undefined for in-memory)\n- `isPersisted()` - Whether session is saved to disk\n"}],"isError":false,"timestamp":1769649686429}}
{"type":"message","id":"76365411","parentId":"f5f96696","timestamp":"2026-01-29T01:21:57.487Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"Now I understand the session structure. Tool results are stored as `ToolResultMessage` within `SessionMessageEntry` entries. The `toolName` field tells me if it's \"read\", \"write\", or \"edit\", and I need to look at the tool's input parameters to get the file path.\n\nLet me look at how tool calls are structured to understand how to get the file path from tool calls:","thinkingSignature":"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"},{"type":"text","text":"Now I have enough context. Let me create the `files.ts` extension:"},{"type":"toolCall","id":"toolu_011TaeiA18zru6JxSDNZF8vw","name":"write","arguments":{"path":"/Users/badlogic/workspaces/pi-mono/.pi/extensions/files.ts","content":"/**\n * Files Extension\n *\n * /files command lists all files the model has read/written/edited in the active session branch,\n * coalesced by path and sorted newest first. Selecting a file opens it in VS Code.\n */\n\nimport type { ExtensionAPI } from \"@mariozechner/pi-coding-agent\";\nimport { DynamicBorder } from \"@mariozechner/pi-coding-agent\";\nimport { Container, Key, matchesKey, type SelectItem, SelectList, Text } from \"@mariozechner/pi-tui\";\n\ninterface FileEntry {\n\tpath: string;\n\toperations: Set<\"read\" | \"write\" | \"edit\">;\n\tlastTimestamp: number;\n}\n\nexport default function (pi: ExtensionAPI) {\n\tpi.registerCommand(\"files\", {\n\t\tdescription: \"Show files read/written/edited in this session\",\n\t\thandler: async (_args, ctx) => {\n\t\t\tif (!ctx.hasUI) {\n\t\t\t\tctx.ui.notify(\"No UI available\", \"error\");\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Get the current branch (path from leaf to root)\n\t\t\tconst branch = ctx.sessionManager.getBranch();\n\n\t\t\t// Collect file operations from tool calls and results\n\t\t\tconst fileMap = new Map<string, FileEntry>();\n\n\t\t\tfor (const entry of branch) {\n\t\t\t\tif (entry.type !== \"message\") continue;\n\t\t\t\tconst msg = entry.message;\n\n\t\t\t\t// Check tool results for read/write/edit\n\t\t\t\tif (msg.role === \"toolResult\") {\n\t\t\t\t\tconst toolName = msg.toolName;\n\t\t\t\t\tif (toolName !== \"read\" && toolName !== \"write\" && toolName !== \"edit\") continue;\n\n\t\t\t\t\t// Get path from details (tool results store input in details)\n\t\t\t\t\tconst path = msg.details?.path;\n\t\t\t\t\tif (!path || typeof path !== \"string\") continue;\n\n\t\t\t\t\tconst existing = fileMap.get(path);\n\t\t\t\t\tif (existing) {\n\t\t\t\t\t\texisting.operations.add(toolName);\n\t\t\t\t\t\tif (msg.timestamp > existing.lastTimestamp) {\n\t\t\t\t\t\t\texisting.lastTimestamp = msg.timestamp;\n\t\t\t\t\t\t}\n\t\t\t\t\t} else {\n\t\t\t\t\t\tfileMap.set(path, {\n\t\t\t\t\t\t\tpath,\n\t\t\t\t\t\t\toperations: new Set([toolName]),\n\t\t\t\t\t\t\tlastTimestamp: msg.timestamp,\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (fileMap.size === 0) {\n\t\t\t\tctx.ui.notify(\"No files read/written/edited in this session\", \"info\");\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Sort by most recent first\n\t\t\tconst files = Array.from(fileMap.values()).sort((a, b) => b.lastTimestamp - a.lastTimestamp);\n\n\t\t\tconst openSelected = async (file: FileEntry): Promise<void> => {\n\t\t\t\ttry {\n\t\t\t\t\tawait pi.exec(\"code\", [\"-g\", file.path], { cwd: ctx.cwd });\n\t\t\t\t} catch (error) {\n\t\t\t\t\tconst message = error instanceof Error ? error.message : String(error);\n\t\t\t\t\tctx.ui.notify(`Failed to open ${file.path}: ${message}`, \"error\");\n\t\t\t\t}\n\t\t\t};\n\n\t\t\t// Show file picker with SelectList\n\t\t\tawait ctx.ui.custom<void>((tui, theme, _kb, done) => {\n\t\t\t\tconst container = new Container();\n\n\t\t\t\t// Top border\n\t\t\t\tcontainer.addChild(new DynamicBorder((s: string) => theme.fg(\"accent\", s)));\n\n\t\t\t\t// Title\n\t\t\t\tcontainer.addChild(new Text(theme.fg(\"accent\", theme.bold(\" Select file to open\")), 0, 0));\n\n\t\t\t\t// Build select items with colored operations\n\t\t\t\tconst items: SelectItem[] = files.map((f) => {\n\t\t\t\t\tconst ops: string[] = [];\n\t\t\t\t\tif (f.operations.has(\"read\")) ops.push(theme.fg(\"muted\", \"R\"));\n\t\t\t\t\tif (f.operations.has(\"write\")) ops.push(theme.fg(\"success\", \"W\"));\n\t\t\t\t\tif (f.operations.has(\"edit\")) ops.push(theme.fg(\"warning\", \"E\"));\n\t\t\t\t\tconst opsLabel = ops.join(\"\");\n\t\t\t\t\treturn {\n\t\t\t\t\t\tvalue: f,\n\t\t\t\t\t\tlabel: `${opsLabel} ${f.path}`,\n\t\t\t\t\t};\n\t\t\t\t});\n\n\t\t\t\tconst visibleRows = Math.min(files.length, 15);\n\t\t\t\tlet currentIndex = 0;\n\n\t\t\t\tconst selectList = new SelectList(items, visibleRows, {\n\t\t\t\t\tselectedPrefix: (t) => theme.fg(\"accent\", t),\n\t\t\t\t\tselectedText: (t) => t, // Keep existing colors\n\t\t\t\t\tdescription: (t) => theme.fg(\"muted\", t),\n\t\t\t\t\tscrollInfo: (t) => theme.fg(\"dim\", t),\n\t\t\t\t\tnoMatch: (t) => theme.fg(\"warning\", t),\n\t\t\t\t});\n\t\t\t\tselectList.onSelect = (item) => {\n\t\t\t\t\tvoid openSelected(item.value as FileEntry);\n\t\t\t\t};\n\t\t\t\tselectList.onCancel = () => done();\n\t\t\t\tselectList.onSelectionChange = (item) => {\n\t\t\t\t\tcurrentIndex = items.indexOf(item);\n\t\t\t\t};\n\t\t\t\tcontainer.addChild(selectList);\n\n\t\t\t\t// Help text\n\t\t\t\tcontainer.addChild(\n\t\t\t\t\tnew Text(theme.fg(\"dim\", \" ↑↓ navigate • ←→ page • enter open • esc close\"), 0, 0),\n\t\t\t\t);\n\n\t\t\t\t// Bottom border\n\t\t\t\tcontainer.addChild(new DynamicBorder((s: string) => theme.fg(\"accent\", s)));\n\n\t\t\t\treturn {\n\t\t\t\t\trender: (w) => container.render(w),\n\t\t\t\t\tinvalidate: () => container.invalidate(),\n\t\t\t\t\thandleInput: (data) => {\n\t\t\t\t\t\t// Add paging with left/right\n\t\t\t\t\t\tif (matchesKey(data, Key.left)) {\n\t\t\t\t\t\t\t// Page up - clamp to 0\n\t\t\t\t\t\t\tcurrentIndex = Math.max(0, currentIndex - visibleRows);\n\t\t\t\t\t\t\tselectList.setSelectedIndex(currentIndex);\n\t\t\t\t\t\t} else if (matchesKey(data, Key.right)) {\n\t\t\t\t\t\t\t// Page down - clamp to last\n\t\t\t\t\t\t\tcurrentIndex = Math.min(items.length - 1, currentIndex + visibleRows);\n\t\t\t\t\t\t\tselectList.setSelectedIndex(currentIndex);\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tselectList.handleInput(data);\n\t\t\t\t\t\t}\n\t\t\t\t\t\ttui.requestRender();\n\t\t\t\t\t},\n\t\t\t\t};\n\t\t\t});\n\t\t},\n\t});\n}\n"}}],"api":"anthropic-messages","provider":"anthropic","model":"claude-opus-4-5","usage":{"input":8,"output":1714,"cacheRead":22660,"cacheWrite":4528,"totalTokens":28910,"cost":{"input":0.00004,"output":0.04285,"cacheRead":0.01133,"cacheWrite":0.028300000000000002,"total":0.08252}},"stopReason":"toolUse","timestamp":1769649686435}}
{"type":"message","id":"4f3710f7","parentId":"76365411","timestamp":"2026-01-29T01:21:57.493Z","message":{"role":"toolResult","toolCallId":"toolu_011TaeiA18zru6JxSDNZF8vw","toolName":"write","content":[{"type":"text","text":"Successfully wrote 4844 bytes to /Users/badlogic/workspaces/pi-mono/.pi/extensions/files.ts"}],"isError":false,"timestamp":1769649717489}}
{"type":"message","id":"5abd1284","parentId":"4f3710f7","timestamp":"2026-01-29T01:22:01.015Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"Let me run the check to make sure there are no TypeScript errors:","thinkingSignature":"EukBCkYICxgCKkDCt44JkgSjCWHpNvZSWQHZPIE2PdtMgdp8hP8r0kyMSH0zSue6xpIhQxDuKUmJiMcAtJn0Y7XN59uLTpwMEGmvEgzMV95xSg1pMhdaatUaDHYJeYgpf2l7vg+dqSIwnqnnhWdv/b5TMuD8O2fHgFY+KM7fHEzGAwAzhesWdl5/SJ0qvVmaT8kf2IkIwXt7KlHt3jlPgUL+yc4DT8ldKbt3mYGdN4qz0q5gre0LFiJsAEs0w694fctcmJoeOu7bQIDrEi/1F73Rw+2pBivt13LfZKqJiSwkS6/J5zouCvw8SC0YAQ=="},{"type":"toolCall","id":"toolu_01DBnT68wNaE6n9a2M5U7roB","name":"bash","arguments":{"command":"cd /Users/badlogic/workspaces/pi-mono && npm run check 2>&1"}}],"api":"anthropic-messages","provider":"anthropic","model":"claude-opus-4-5","usage":{"input":8,"output":97,"cacheRead":27188,"cacheWrite":1763,"totalTokens":29056,"cost":{"input":0.00004,"output":0.002425,"cacheRead":0.013594,"cacheWrite":0.01101875,"total":0.02707775}},"stopReason":"toolUse","timestamp":1769649717493}}
{"type":"message","id":"74693549","parentId":"5abd1284","timestamp":"2026-01-29T01:22:04.414Z","message":{"role":"toolResult","toolCallId":"toolu_01DBnT68wNaE6n9a2M5U7roB","toolName":"bash","content":[{"type":"text","text":"\n> pi-monorepo@0.0.3 check\n> biome check --write . && tsgo --noEmit && cd packages/web-ui && npm run check\n\nChecked 444 files in 297ms. No fixes applied.\n\n> @mariozechner/pi-web-ui@0.50.1 check\n> biome check --write . && tsc --noEmit && cd example && biome check --write . && tsc --noEmit\n\nChecked 73 files in 37ms. No fixes applied.\nChecked 3 files in 8ms. No fixes applied.\n"}],"isError":false,"timestamp":1769649724414}}
{"type":"message","id":"14d79e48","parentId":"74693549","timestamp":"2026-01-29T01:22:12.060Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"Check passes. The extension is complete.\n\nThe `files.ts` extension:\n1. Gets the current branch from session manager\n2. Iterates through entries looking for `toolResult` messages with toolName of \"read\", \"write\", or \"edit\"\n3. Extracts the path from the tool's details\n4. Coalesces multiple operations to the same file into a single entry, tracking all operations\n5. Sorts by most recent timestamp first\n6. Displays in a SelectList with R/W/E indicators\n7. Opens selected file in VS Code","thinkingSignature":"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"},{"type":"text","text":"Created `.pi/extensions/files.ts`. The `/files` command:\n\n- Scans the active session branch for `read`, `write`, and `edit` tool results\n- Coalesces operations to the same file, tracking which ops occurred (R=read, W=write, E=edit)\n- Sorts by most recent timestamp first\n- Opens the selected file in VS Code on enter\n\nOperations are color-coded: R (muted), W (green), E (yellow)."}],"api":"anthropic-messages","provider":"anthropic","model":"claude-opus-4-5","usage":{"input":8,"output":243,"cacheRead":28951,"cacheWrite":259,"totalTokens":29461,"cost":{"input":0.00004,"output":0.0060750000000000005,"cacheRead":0.014475499999999999,"cacheWrite":0.0016187500000000002,"total":0.022209249999999996}},"stopReason":"stop","timestamp":1769649724415}}
{"type":"message","id":"ec338d42","parentId":"14d79e48","timestamp":"2026-01-29T01:22:31.478Z","message":{"role":"user","content":[{"type":"text","text":"i just did /reload, and i get No files read/written/edited in this session ..."}],"timestamp":1769649751474}}
{"type":"message","id":"d88dbe23","parentId":"ec338d42","timestamp":"2026-01-29T01:22:32.806Z","message":{"role":"assistant","content":[],"api":"anthropic-messages","provider":"anthropic","model":"claude-opus-4-5","usage":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"totalTokens":0,"cost":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"total":0}},"stopReason":"aborted","timestamp":1769649751476,"errorMessage":"Operation aborted"}}
{"type":"message","id":"472572f1","parentId":"d88dbe23","timestamp":"2026-01-29T01:22:41.208Z","message":{"role":"user","content":[{"type":"text","text":"session file: /Users/badlogic/.pi/agent/sessions/--Users-badlogic-workspaces-pi-mono--/2026-01-29T01-19-15-101Z_6c38fda\n 3-22df-41f5-a3a5-25eb84998554.jsonl"}],"timestamp":1769649761207}}
{"type":"message","id":"075bc0c4","parentId":"472572f1","timestamp":"2026-01-29T01:22:45.697Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"The user is saying that after /reload, the /files command shows no files, but clearly there have been file operations in the session. Let me check the session file to understand the actual structure of the tool result entries.","thinkingSignature":"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"},{"type":"toolCall","id":"toolu_01KkPyCbVDQhNd3NuRn1hJqQ","name":"bash","arguments":{"command":"cat \"/Users/badlogic/.pi/agent/sessions/--Users-badlogic-workspaces-pi-mono--/2026-01-29T01-19-15-101Z_6c38fda3-22df-41f5-a3a5-25eb84998554.jsonl\" | head -100"}}],"api":"anthropic-messages","provider":"anthropic","model":"claude-opus-4-5","usage":{"input":10,"output":182,"cacheRead":0,"cacheWrite":29553,"totalTokens":29745,"cost":{"input":0.00005,"output":0.00455,"cacheRead":0,"cacheWrite":0.18470625000000002,"total":0.18930625}},"stopReason":"toolUse","timestamp":1769649761208}}
[Showing lines 2-13 of 13 (50.0KB limit). Full output: /var/folders/49/l4171l3n219_xwq30fmyzr8w0000gn/T/pi-bash-a4fa66809a3e9dd3.log]I see! Looking at the actual tool result structure, I can see:
{"role":"toolResult","toolCallId":"toolu_01F1qqSfh12f2rEtRhfUMKsv","toolName":"read","content":[...],"isError":false,"timestamp":1769649686429}The details field is not present in the tool result. I was assuming the path would be in details.path, but it's not there. I need to find another way to get the path.
Let me look at a write tool result:
{"role":"toolResult","toolCallId":"toolu_011TaeiA18zru6JxSDNZF8vw","toolName":"write","content":[{"type":"text","text":"Successfully wrote 4844 bytes to /Users/badlogic/workspaces/pi-mono/.pi/extensions/files.ts"}],"isError":false,"timestamp":1769649717489}Hmm, the path is only in the content text, not in structured data.
But wait, I should look for the path in the tool CALL (in the assistant message), not the tool result. The assistant message has the tool call with the arguments:
{"type":"toolCall","id":"toolu_01F1qqSfh12f2rEtRhfUMKsv","name":"read","arguments":{"path":"/Users/badlogic/workspaces/pi-mono/packages/coding-agent/docs/session.md"}}So I need to match tool results with their corresponding tool calls to get the path. Or I could parse the content text.
Actually, looking more carefully at the tool implementations, the details field should contain the input parameters. Let me check the actual tool implementations to see what they store.
I see the issue. The tool results don't have details.path. Let me check how the tools store their details:
>grep -A5 '"details"' "/Users/badlogic/.pi/agent/sessions/--Users-badlogic-workspaces-pi-mono--/2026-01-29T01-19-15-101Z_6c38fda3-22df-41f5-a3a5-25eb84998554.jsonl" | head -30{"type":"message","id":"13dcb391","parentId":"19d98591","timestamp":"2026-01-29T01:22:57.200Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"I see! Looking at the actual tool result structure, I can see:\n\n```json\n{\"role\":\"toolResult\",\"toolCallId\":\"toolu_01F1qqSfh12f2rEtRhfUMKsv\",\"toolName\":\"read\",\"content\":[...],\"isError\":false,\"timestamp\":1769649686429}\n```\n\nThe `details` field is not present in the tool result. I was assuming the path would be in `details.path`, but it's not there. I need to find another way to get the path.\n\nLet me look at a write tool result:\n```json\n{\"role\":\"toolResult\",\"toolCallId\":\"toolu_011TaeiA18zru6JxSDNZF8vw\",\"toolName\":\"write\",\"content\":[{\"type\":\"text\",\"text\":\"Successfully wrote 4844 bytes to /Users/badlogic/workspaces/pi-mono/.pi/extensions/files.ts\"}],\"isError\":false,\"timestamp\":1769649717489}\n```\n\nHmm, the path is only in the content text, not in structured data. \n\nBut wait, I should look for the path in the tool CALL (in the assistant message), not the tool result. The assistant message has the tool call with the arguments:\n\n```json\n{\"type\":\"toolCall\",\"id\":\"toolu_01F1qqSfh12f2rEtRhfUMKsv\",\"name\":\"read\",\"arguments\":{\"path\":\"/Users/badlogic/workspaces/pi-mono/packages/coding-agent/docs/session.md\"}}\n```\n\nSo I need to match tool results with their corresponding tool calls to get the path. Or I could parse the content text.\n\nActually, looking more carefully at the tool implementations, the `details` field should contain the input parameters. Let me check the actual tool implementations to see what they store.","thinkingSignature":"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"},{"type":"text","text":"I see the issue. The tool results don't have `details.path`. Let me check how the tools store their details:"},{"type":"toolCall","id":"toolu_01XMEG6Tkd4xw8kt2MHLJVKJ","name":"bash","arguments":{"command":"grep -A5 '\"details\"' \"/Users/badlogic/.pi/agent/sessions/--Users-badlogic-workspaces-pi-mono--/2026-01-29T01-19-15-101Z_6c38fda3-22df-41f5-a3a5-25eb84998554.jsonl\" | head -30"}}],"api":"anthropic-messages","provider":"anthropic","model":"claude-opus-4-5","usage":{"input":8,"output":600,"cacheRead":29553,"cacheWrite":13315,"totalTokens":43476,"cost":{"input":0.00004,"output":0.015000000000000001,"cacheRead":0.0147765,"cacheWrite":0.08321875000000001,"total":0.11303525}},"stopReason":"toolUse","timestamp":1769649765797}}
[Showing lines 6-7 of 7 (50.0KB limit). Full output: /var/folders/49/l4171l3n219_xwq30fmyzr8w0000gn/T/pi-bash-d8c6912bd33798e2.log]I see there's no details field in the tool results. The path is only stored in the tool call arguments, not in the tool result. Let me look at the actual tool implementation to see if details are supposed to be there.
Let me look at the actual tool implementations to see what they store in details:
>rg -A10 "return \{" /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/tools/read.ts | head -30return {
name: "read",
label: "read",
description: `Read the contents of a file. Supports text files and images (jpg, png, gif, webp). Images are sent as attachments. For text files, output is truncated to ${DEFAULT_MAX_LINES} lines or ${DEFAULT_MAX_BYTES / 1024}KB (whichever is hit first). Use offset/limit for large files. When you need the full file, continue with offset until complete.`,
parameters: readSchema,
execute: async (
_toolCallId: string,
{ path, offset, limit }: { path: string; offset?: number; limit?: number },
signal?: AbortSignal,
) => {
const absolutePath = resolveReadPath(path, cwd);The details field in tool results depends on how the tool implements it. Let me look at what the read tool actually returns:
>rg "details:" /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/tools/read.tsreturn new Promise<{ content: (TextContent | ImageContent)[]; details: ReadToolDetails | undefined }>(
let details: ReadToolDetails | undefined;Let me see the ReadToolDetails type and how it's populated:
>rg -B2 -A10 "ReadToolDetails" /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/tools/read.ts | head -50});
export interface ReadToolDetails {
truncation?: TruncationResult;
}
/**
* Pluggable operations for the read tool.
* Override these to delegate file reading to remote systems (e.g., SSH).
*/
export interface ReadOperations {
/** Read file contents as a Buffer */
readFile: (absolutePath: string) => Promise<Buffer>;
--
const absolutePath = resolveReadPath(path, cwd);
return new Promise<{ content: (TextContent | ImageContent)[]; details: ReadToolDetails | undefined }>(
(resolve, reject) => {
// Check if already aborted
if (signal?.aborted) {
reject(new Error("Operation aborted"));
return;
}
let aborted = false;
// Set up abort handler
--
// Read the file based on type
let content: (TextContent | ImageContent)[];
let details: ReadToolDetails | undefined;
if (mimeType) {
// Read as image (binary)
const buffer = await ops.readFile(absolutePath);
const base64 = buffer.toString("base64");
if (autoResizeImages) {
// Resize image if needed
const resized = await resizeImage({ type: "image", data: base64, mimeType });
const dimensionNote = formatDimensionNote(resized);I see! The ReadToolDetails only contains truncation info, not the path. The path is in the tool CALL arguments, not in the tool result details.
I need to look at the assistant messages to find tool calls, then match them with tool results via toolCallId. Let me update the extension to do this.
I see the issue now. The details field doesn't contain the path. The path is in the tool CALL arguments (in assistant messages), not tool results. I need to match tool calls with their results via toolCallId.
Let me run check to make sure there are no errors:
>cd /Users/badlogic/workspaces/pi-mono && npm run check 2>&1> pi-monorepo@0.0.3 check
> biome check --write . && tsgo --noEmit && cd packages/web-ui && npm run check
Checked 444 files in 301ms. No fixes applied.
> @mariozechner/pi-web-ui@0.50.1 check
> biome check --write . && tsc --noEmit && cd example && biome check --write . && tsc --noEmit
Checked 73 files in 38ms. No fixes applied.
Checked 3 files in 8ms. No fixes applied.Good, check passes. The fix:
type: "toolCall", extract the path from arguments and store by idtoolCallId to get the pathThe user can now /reload and try /files again.
Fixed. The issue was that tool result details don't contain the path. The path is in the tool CALL arguments (in assistant messages). The extension now:
toolCall blocks, extracts path from arguments, stores by idtoolCallId to get the pathTry /reload and /files again.
>git statusOn branch main
Your branch is up to date with 'origin/main'.
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: packages/coding-agent/docs/models.md
Untracked files:
(use "git add <file>..." to include in what will be committed)
.pi/extensions/files.ts
no changes added to commit (use "git add" and/or "git commit -a")
looking good, commit and push
The user wants me to commit and push the changes. I need to commit only the file I modified - .pi/extensions/files.ts
>cd /Users/badlogic/workspaces/pi-mono && git add .pi/extensions/files.ts && git commit -m "feat: add /files command to list session file operations" && git pushRunning formatting, linting, and type checking...
> pi-monorepo@0.0.3 check
> biome check --write . && tsgo --noEmit && cd packages/web-ui && npm run check
Checked 444 files in 360ms. No fixes applied.
> @mariozechner/pi-web-ui@0.50.1 check
> biome check --write . && tsc --noEmit && cd example && biome check --write . && tsc --noEmit
Checked 73 files in 41ms. No fixes applied.
Checked 3 files in 8ms. No fixes applied.
✅ All pre-commit checks passed!
[main f3cfb7e1] feat: add /files command to list session file operations
1 file changed, 173 insertions(+)
create mode 100644 .pi/extensions/files.ts
To https://github.com/badlogic/pi-mono.git
1b6a1475..f3cfb7e1 main -> mainDone. Committed and pushed successfully.
Done. Committed and pushed f3cfb7e1.
{"role":"toolResult","toolCallId":"toolu_01F1qqSfh12f2rEtRhfUMKsv","toolName":"read","content":[...],"isError":false,"timestamp":1769649686429}{"role":"toolResult","toolCallId":"toolu_011TaeiA18zru6JxSDNZF8vw","toolName":"write","content":[{"type":"text","text":"Successfully wrote 4844 bytes to /Users/badlogic/workspaces/pi-mono/.pi/extensions/files.ts"}],"isError":false,"timestamp":1769649717489}{"type":"toolCall","id":"toolu_01F1qqSfh12f2rEtRhfUMKsv","name":"read","arguments":{"path":"/Users/badlogic/workspaces/pi-mono/packages/coding-agent/docs/session.md"}}