feat: Read My Mind phase 1, per-case intent profiles (capture + API + skill)

Per-case profiles of user intent (docs/readmymind-plan.md): user-stated goals
plus the user's recently submitted prompts, captured from the Claude session
transcript behind the new synced readMyMindEnabled setting (default OFF).

- intent-store.ts: keyed by owner + realpath(workingDir), FIFO/size caps,
  consecutive-dupe collapse, atomic 0600 writes to ~/.codeman/intents.json
- transcript-watcher.ts: new transcript:user_prompt event for typed user turns
  (tool_result-only entries stay silent); capture wiring in server.ts is
  claude-only and gated on the setting per event
- readmymind-routes.ts: GET/PUT/DELETE /api/sessions/:id/intent, ownership
  via findSessionOrFail, strict Zod schema
- agent skill: SKILL.md recipe + endpoints.md rows so agents can read and
  record intent (PUT replaces: read + merge; never delete unprompted)
- groundwork for the phase-2 predictor button; nothing is ever auto-sent

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/intent-store.ts

@@ -0,0 +1,233 @@
+/**
+ * @fileoverview Read My Mind intent store: per-case profiles of user intent.
+ *
+ * Feeds the Read My Mind predictor (`docs/readmymind-plan.md`). Each profile
+ * pairs user/agent-stated `goals` with the user's recently captured prompts,
+ * keyed by owner + realpath(workingDir) so the profile survives `/clear`,
+ * respawns, and session churn, and so multi-user scoping is structural (two
+ * owners of the same directory get distinct profiles).
+ *
+ * Capture rides the session transcript (`transcript:user_prompt`), not the
+ * input paths: `POST /input` sees only programmatic prompts and the WS channel
+ * delivers raw keystrokes, so neither yields clean submitted prompts.
+ *
+ * Prompts can contain secrets, so the state file is written 0600 (same posture
+ * as `users.json`) and the store is never fed into `/api/search`.
+ *
+ * Pure helpers (`deriveIntentKey`, `sanitizePromptText`, `isCapturablePrompt`,
+ * `appendPrompt`) are exported for unit tests; the `IntentStore` class adds the
+ * IO. Writes are atomic (tmp + rename) and synchronous: mutations arrive at
+ * human prompting pace, so there is nothing to debounce and no timer to leak.
+ */
+
+import { createHash } from 'node:crypto';
+import { existsSync, mkdirSync, readFileSync, realpathSync, renameSync, writeFileSync } from 'node:fs';
+import { dirname } from 'node:path';
+import { dataPath } from './config/instance.js';
+import type { IntentProfile, IntentPromptEntry } from './types/index.js';
+
+// ========== Limits ==========
+
+/** Max stored profiles; lowest `updatedAt` is evicted first. */
+export const MAX_INTENT_PROFILES = 200;
+
+/** Max captured prompts per profile (FIFO). */
+export const MAX_RECENT_PROMPTS = 50;
+
+/** Max characters kept per captured prompt. */
+export const MAX_PROMPT_CHARS = 500;
+
+/** Max characters for the `goals` field. */
+export const MAX_GOALS_CHARS = 8192;
+
+/** Prompts shorter than this are menu digits / Esc artifacts, not intent. */
+const MIN_PROMPT_CHARS = 3;
+
+// ========== Pure helpers ==========
+
+/** Stable per-case key: owner + resolved workingDir, hashed. */
+export function deriveIntentKey(owner: string | undefined, workingDir: string): string {
+  return createHash('sha256')
+    .update(`${owner ?? ''}:${workingDir}`)
+    .digest('hex')
+    .slice(0, 16);
+}
+
+/**
+ * Transcript user entries that are not typed intent: local slash-command echo,
+ * hook/system wrappers, and interrupt markers.
+ */
+export function isCapturablePrompt(text: string): boolean {
+  if (text.includes('<command-name>') || text.includes('<local-command-stdout>')) return false;
+  if (text.startsWith('<system-reminder>')) return false;
+  if (text.startsWith('Caveat: The messages below')) return false;
+  if (text.startsWith('[Request interrupted')) return false;
+  return true;
+}
+
+/**
+ * Collapse a transcript prompt to a bounded single line, or null when it is
+ * too short to mean anything (menu digits, Esc artifacts).
+ */
+export function sanitizePromptText(raw: string): string | null {
+  const text = raw
+    .replace(/[\r\n]+/g, ' ')
+    // eslint-disable-next-line no-control-regex
+    .replace(/[\x00-\x08\x0b-\x1f\x7f]/g, '')
+    .trim();
+  if (text.length < MIN_PROMPT_CHARS) return null;
+  return text.length > MAX_PROMPT_CHARS ? text.slice(0, MAX_PROMPT_CHARS) : text;
+}
+
+/**
+ * Fold one prompt into a profile: consecutive duplicates collapse (auto-resume
+ * "continue" spam), FIFO cap applies. Returns a new profile object.
+ */
+export function appendPrompt(profile: IntentProfile, entry: IntentPromptEntry): IntentProfile {
+  const last = profile.recentPrompts[profile.recentPrompts.length - 1];
+  if (last && last.text === entry.text) {
+    return { ...profile, updatedAt: entry.ts };
+  }
+  const recentPrompts = [...profile.recentPrompts, entry].slice(-MAX_RECENT_PROMPTS);
+  return { ...profile, recentPrompts, updatedAt: entry.ts };
+}
+
+// ========== Store ==========
+
+interface IntentStoreFile {
+  version: 1;
+  profiles: IntentProfile[];
+}
+
+export class IntentStore {
+  private profiles: Map<string, IntentProfile> | null = null;
+
+  private get filePath(): string {
+    return dataPath('intents.json');
+  }
+
+  // ----- Public API -----
+
+  /**
+   * The profile for a session's case. Never persists on read: an absent
+   * profile returns an empty transient one (`updatedAt: 0`).
+   */
+  getProfile(owner: string | undefined, workingDir: string): IntentProfile {
+    const dir = this.resolveDir(workingDir);
+    const key = deriveIntentKey(owner, dir);
+    return this.load().get(key) ?? this.emptyProfile(key, dir);
+  }
+
+  /**
+   * Capture one submitted prompt. Returns true when it was recorded (passed
+   * the capturability filter and sanitization).
+   */
+  recordPrompt(
+    owner: string | undefined,
+    workingDir: string,
+    sessionId: string,
+    rawText: string,
+    ts: number = Date.now()
+  ): boolean {
+    if (!isCapturablePrompt(rawText)) return false;
+    const text = sanitizePromptText(rawText);
+    if (text === null) return false;
+
+    const dir = this.resolveDir(workingDir);
+    const key = deriveIntentKey(owner, dir);
+    const profiles = this.load();
+    const profile = profiles.get(key) ?? this.emptyProfile(key, dir);
+    profiles.set(key, appendPrompt(profile, { ts, sessionId, text }));
+    this.evictOverflow(profiles);
+    this.persist();
+    return true;
+  }
+
+  /** Replace the goals text (bounded). Returns the updated profile. */
+  setGoals(owner: string | undefined, workingDir: string, goals: string): IntentProfile {
+    const dir = this.resolveDir(workingDir);
+    const key = deriveIntentKey(owner, dir);
+    const profiles = this.load();
+    const profile = profiles.get(key) ?? this.emptyProfile(key, dir);
+    const updated: IntentProfile = { ...profile, goals: goals.slice(0, MAX_GOALS_CHARS), updatedAt: Date.now() };
+    profiles.set(key, updated);
+    this.evictOverflow(profiles);
+    this.persist();
+    return updated;
+  }
+
+  /** Forget everything for a case. Returns true when a profile existed. */
+  deleteProfile(owner: string | undefined, workingDir: string): boolean {
+    const dir = this.resolveDir(workingDir);
+    const key = deriveIntentKey(owner, dir);
+    const profiles = this.load();
+    const existed = profiles.delete(key);
+    if (existed) this.persist();
+    return existed;
+  }
+
+  // ----- Internals -----
+
+  private emptyProfile(key: string, workingDir: string): IntentProfile {
+    return { key, workingDir, updatedAt: 0, goals: '', recentPrompts: [] };
+  }
+
+  private resolveDir(workingDir: string): string {
+    try {
+      return realpathSync(workingDir);
+    } catch {
+      return workingDir;
+    }
+  }
+
+  private load(): Map<string, IntentProfile> {
+    if (this.profiles) return this.profiles;
+    this.profiles = new Map();
+    try {
+      if (existsSync(this.filePath)) {
+        const parsed = JSON.parse(readFileSync(this.filePath, 'utf-8')) as IntentStoreFile;
+        if (parsed && Array.isArray(parsed.profiles)) {
+          for (const profile of parsed.profiles) {
+            if (profile && typeof profile.key === 'string') this.profiles.set(profile.key, profile);
+          }
+        }
+      }
+    } catch (err) {
+      console.warn(`[IntentStore] Failed to load ${this.filePath}, starting empty:`, err);
+    }
+    return this.profiles;
+  }
+
+  private evictOverflow(profiles: Map<string, IntentProfile>): void {
+    while (profiles.size > MAX_INTENT_PROFILES) {
+      let oldestKey: string | null = null;
+      let oldestAt = Infinity;
+      for (const [key, profile] of profiles) {
+        if (profile.updatedAt < oldestAt) {
+          oldestAt = profile.updatedAt;
+          oldestKey = key;
+        }
+      }
+      if (oldestKey === null) return;
+      profiles.delete(oldestKey);
+    }
+  }
+
+  private persist(): void {
+    if (!this.profiles) return;
+    const file: IntentStoreFile = { version: 1, profiles: [...this.profiles.values()] };
+    const tmpPath = `${this.filePath}.tmp`;
+    try {
+      // dataPath()'s own mkdir is once-per-process; per-file test HOMEs need this.
+      mkdirSync(dirname(this.filePath), { recursive: true });
+      // 0600: captured prompts can contain secrets (same posture as users.json).
+      writeFileSync(tmpPath, JSON.stringify(file, null, 2), { mode: 0o600 });
+      renameSync(tmpPath, this.filePath);
+    } catch (err) {
+      console.warn(`[IntentStore] Failed to persist ${this.filePath}:`, err);
+    }
+  }
+}
+
+/** Module-level singleton, same pattern as `approvalInbox` (web/approval-inbox.ts). */
+export const intentStore = new IntentStore();

src/transcript-watcher.ts

@@ -6,6 +6,7 @@
  * - Tool execution state
  * - Error conditions
  * - Plan mode prompts
+ * - User-authored prompts (`transcript:user_prompt`, Read My Mind intent capture)
  *
  * The transcript path is provided by Claude Code hooks in the `transcript_path` field.
  */
@@ -372,12 +373,23 @@ export class TranscriptWatcher extends EventEmitter {
     this.state.errorMessage = null;
 
     const content = entry.message?.content;
+    if (typeof content === 'string') {
+      if (content.trim()) this.emit('transcript:user_prompt', content, entry.timestamp);
+      return;
+    }
     if (!Array.isArray(content)) return;
+    let promptText = '';
     for (const block of content) {
       if (block.type === 'tool_result') {
         this.handleToolResult(block);
+      } else if (block.type === 'text' && block.text) {
+        promptText += (promptText ? ' ' : '') + block.text;
       }
     }
+    // Text blocks mean a typed prompt; tool_result-only entries are Claude's own
+    // tool plumbing, not intent. Filtering of command echo / system wrappers is
+    // the intent store's job (`isCapturablePrompt`), not the watcher's.
+    if (promptText.trim()) this.emit('transcript:user_prompt', promptText, entry.timestamp);
   }
 
   private handleToolResult(block: TranscriptContentBlock): void {

src/types/index.ts

@@ -71,3 +71,4 @@ export * from './workflow-run.js';
 export * from './search.js';
 export * from './user.js';
 export * from './webview.js';
+export * from './intent.js';

src/types/intent.ts

@@ -0,0 +1,31 @@
+/**
+ * @fileoverview Read My Mind intent types.
+ *
+ * An intent profile is per CASE (owner + workingDir), not per session:
+ * intentions outlive `/clear`, respawn cycles, and individual sessions.
+ * See `docs/readmymind-plan.md`.
+ */
+
+/** One captured user prompt, as it appeared in the session transcript. */
+export interface IntentPromptEntry {
+  /** Capture time (ms epoch). */
+  ts: number;
+  /** Codeman session the prompt was sent in. */
+  sessionId: string;
+  /** The prompt text, sanitized and bounded. */
+  text: string;
+}
+
+/** Per-case profile of what the user is trying to accomplish. */
+export interface IntentProfile {
+  /** Stable key: sha256(owner + ':' + realpath(workingDir)), first 16 hex chars. */
+  key: string;
+  /** The case working directory the profile belongs to (realpath-resolved). */
+  workingDir: string;
+  /** Last mutation (ms epoch). 0 for a never-persisted empty profile. */
+  updatedAt: number;
+  /** User/agent-stated goals, freeform markdown, bounded. */
+  goals: string;
+  /** Most recent captured prompts, oldest first, FIFO-capped. */
+  recentPrompts: IntentPromptEntry[];
+}

src/web/routes/index.ts

@@ -11,6 +11,7 @@ export { registerCronRoutes } from './cron-routes.js';
 export { registerSystemRoutes } from './system-routes.js';
 export { registerHookEventRoutes } from './hook-event-routes.js';
 export { registerApprovalRoutes } from './approval-routes.js';
+export { registerReadMyMindRoutes } from './readmymind-routes.js';
 export { registerStatusTelemetryRoutes } from './status-telemetry-routes.js';
 export { registerCaseRoutes } from './case-routes.js';
 export { registerSessionRoutes } from './session-routes.js';

src/web/routes/readmymind-routes.ts

@@ -0,0 +1,50 @@
+/**
+ * @fileoverview Read My Mind intent routes.
+ *
+ * Per-case intent profiles feeding the Read My Mind predictor
+ * (docs/readmymind-plan.md):
+ * - `GET    /api/sessions/:id/intent`: the profile for the session's case
+ * - `PUT    /api/sessions/:id/intent`: replace the goals text
+ * - `DELETE /api/sessions/:id/intent`: forget the case's profile
+ *
+ * The profile is keyed by owner + workingDir, so multi-user scoping is
+ * structural; session ownership is still enforced via `findSessionOrFail`
+ * (with `req`, so a foreign session id 404s) to keep the session-routes
+ * no-existence-leak policy.
+ *
+ * Deliberately session-scoped rather than a raw `/api/intents/:key` surface:
+ * the session resolves owner + workingDir server-side, so a caller can never
+ * address another case's profile by guessing keys.
+ *
+ * Registrations use the bare `app.<method>('path', ...)` + `req.params as`
+ * shape (session-routes style): these endpoints are documented in the agent
+ * skill, and the endpoints.md drift test's scanner does not see registrations
+ * with a generic between the method and the path.
+ */
+
+import { FastifyInstance } from 'fastify';
+import { IntentGoalsSchema } from '../schemas.js';
+import { parseBody, findSessionOrFail } from '../route-helpers.js';
+import { intentStore } from '../../intent-store.js';
+import type { SessionPort } from '../ports/index.js';
+
+export function registerReadMyMindRoutes(app: FastifyInstance, ctx: SessionPort): void {
+  app.get('/api/sessions/:id/intent', async (req) => {
+    const { id } = req.params as { id: string };
+    const session = findSessionOrFail(ctx, id, req);
+    return { success: true, data: { intent: intentStore.getProfile(session.owner, session.workingDir) } };
+  });
+
+  app.put('/api/sessions/:id/intent', async (req) => {
+    const { id } = req.params as { id: string };
+    const body = parseBody(IntentGoalsSchema, req.body);
+    const session = findSessionOrFail(ctx, id, req);
+    return { success: true, data: { intent: intentStore.setGoals(session.owner, session.workingDir, body.goals) } };
+  });
+
+  app.delete('/api/sessions/:id/intent', async (req) => {
+    const { id } = req.params as { id: string };
+    const session = findSessionOrFail(ctx, id, req);
+    return { success: true, data: { deleted: intentStore.deleteProfile(session.owner, session.workingDir) } };
+  });
+}

src/web/schemas.ts

@@ -700,6 +700,16 @@ export const ApprovalAnswerSchema = z
   })
   .strict();
 
+/**
+ * Body of PUT /api/sessions/:id/intent (Read My Mind). The 8192 cap mirrors
+ * MAX_GOALS_CHARS in intent-store.ts.
+ */
+export const IntentGoalsSchema = z
+  .object({
+    goals: z.string().max(8192),
+  })
+  .strict();
+
 // ========== Configuration ==========
 
 /**
@@ -809,6 +819,13 @@ export const SettingsUpdateSchema = z
      * already pending immediately.
      */
     approvalsInboxEnabled: z.boolean().optional(),
+    /**
+     * Read My Mind (docs/readmymind-plan.md): capture the user's submitted
+     * prompts into per-case intent profiles. SYNCED, default OFF (opt-in:
+     * captured prompts are sensitive). OFF stops capture immediately; already
+     * stored profiles stay until DELETE /api/sessions/:id/intent.
+     */
+    readMyMindEnabled: z.boolean().optional(),
     tunnelEnabled: z.boolean().optional(),
     // Action field (NOT persisted): explicit per-request acknowledgment that the
     // operator accepts exposing an UNAUTHENTICATED public tunnel (no CODEMAN_PASSWORD).

src/web/server.ts

@@ -85,7 +85,8 @@ import {
   attachSessionListeners,
   detachSessionListeners,
 } from './session-listener-wiring.js';
-import { sessionWaits } from './session-wait-registry.js';
+import { sessionWaits, hooksAvailableForMode } from './session-wait-registry.js';
+import { intentStore } from '../intent-store.js';
 import { approvalInbox } from './approval-inbox.js';
 import {
   wireRespawnListeners,
@@ -149,6 +150,7 @@ import {
   registerScheduledRoutes,
   registerHookEventRoutes,
   registerApprovalRoutes,
+  registerReadMyMindRoutes,
   registerStatusTelemetryRoutes,
   registerSystemRoutes,
   registerCaseRoutes,
@@ -955,6 +957,7 @@ export class WebServer extends EventEmitter {
     registerScheduledRoutes(this.app, ctx);
     registerHookEventRoutes(this.app, ctx);
     registerApprovalRoutes(this.app, ctx);
+    registerReadMyMindRoutes(this.app, ctx);
     registerStatusTelemetryRoutes(this.app, ctx);
     registerSystemRoutes(this.app, ctx);
     registerCaseRoutes(this.app, ctx);
@@ -1022,6 +1025,10 @@ export class WebServer extends EventEmitter {
         console.error(`[Transcript] Error for session ${sessionId}:`, error.message);
       });
 
+      watcher.on('transcript:user_prompt', (text: string) => {
+        void this.captureIntentPrompt(sessionId, text);
+      });
+
       this.transcriptWatchers.set(sessionId, watcher);
     }
 
@@ -1029,6 +1036,24 @@ export class WebServer extends EventEmitter {
     watcher.updatePath(transcriptPath);
   }
 
+  /**
+   * Read My Mind intent capture: fold one transcript user prompt into the
+   * case's intent profile (docs/readmymind-plan.md). Opt-in via
+   * `readMyMindEnabled` (default OFF) and claude-only; the mode gate is
+   * belt-and-braces since only hook-fed sessions have a transcript watcher.
+   */
+  private async captureIntentPrompt(sessionId: string, text: string): Promise<void> {
+    const session = this.sessions.get(sessionId);
+    if (!session || !hooksAvailableForMode(session.mode)) return;
+    try {
+      const settings = await this.readSettings();
+      if (settings.readMyMindEnabled !== true) return;
+      intentStore.recordPrompt(session.owner, session.workingDir, sessionId, text);
+    } catch (err) {
+      console.warn(`[IntentStore] Capture failed for session ${sessionId}:`, err);
+    }
+  }
+
   /**
    * Stop the transcript watcher for a session.
    */