init claude-code

2026-04-01 17:32:37 +02:00
commit 73b208c009
1902 changed files with 513237 additions and 0 deletions
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+import { feature } from 'bun:bundle'
+import type { UUID } from 'crypto'
+import { dirname } from 'path'
+import {
+  getMainLoopModelOverride,
+  getSessionId,
+  setMainLoopModelOverride,
+  setMainThreadAgentType,
+  setOriginalCwd,
+  switchSession,
+} from '../bootstrap/state.js'
+import { clearSystemPromptSections } from '../constants/systemPromptSections.js'
+import { restoreCostStateForSession } from '../cost-tracker.js'
+import type { AppState } from '../state/AppState.js'
+import type { AgentColorName } from '../tools/AgentTool/agentColorManager.js'
+import {
+  type AgentDefinition,
+  type AgentDefinitionsResult,
+  getActiveAgentsFromList,
+  getAgentDefinitionsWithOverrides,
+} from '../tools/AgentTool/loadAgentsDir.js'
+import { TODO_WRITE_TOOL_NAME } from '../tools/TodoWriteTool/constants.js'
+import { asSessionId } from '../types/ids.js'
+import type {
+  AttributionSnapshotMessage,
+  ContextCollapseCommitEntry,
+  ContextCollapseSnapshotEntry,
+  PersistedWorktreeSession,
+} from '../types/logs.js'
+import type { Message } from '../types/message.js'
+import { renameRecordingForSession } from './asciicast.js'
+import { clearMemoryFileCaches } from './claudemd.js'
+import {
+  type AttributionState,
+  attributionRestoreStateFromLog,
+  restoreAttributionStateFromSnapshots,
+} from './commitAttribution.js'
+import { updateSessionName } from './concurrentSessions.js'
+import { getCwd } from './cwd.js'
+import { logForDebugging } from './debug.js'
+import type { FileHistorySnapshot } from './fileHistory.js'
+import { fileHistoryRestoreStateFromLog } from './fileHistory.js'
+import { createSystemMessage } from './messages.js'
+import { parseUserSpecifiedModel } from './model/model.js'
+import { getPlansDirectory } from './plans.js'
+import { setCwd } from './Shell.js'
+import {
+  adoptResumedSessionFile,
+  recordContentReplacement,
+  resetSessionFilePointer,
+  restoreSessionMetadata,
+  saveMode,
+  saveWorktreeState,
+} from './sessionStorage.js'
+import { isTodoV2Enabled } from './tasks.js'
+import type { TodoList } from './todo/types.js'
+import { TodoListSchema } from './todo/types.js'
+import type { ContentReplacementRecord } from './toolResultStorage.js'
+import {
+  getCurrentWorktreeSession,
+  restoreWorktreeSession,
+} from './worktree.js'
+
+type ResumeResult = {
+  messages?: Message[]
+  fileHistorySnapshots?: FileHistorySnapshot[]
+  attributionSnapshots?: AttributionSnapshotMessage[]
+  contextCollapseCommits?: ContextCollapseCommitEntry[]
+  contextCollapseSnapshot?: ContextCollapseSnapshotEntry
+}
+
+/**
+ * Scan the transcript for the last TodoWrite tool_use block and return its todos.
+ * Used to hydrate AppState.todos on SDK --resume so the model's todo list
+ * survives session restarts without file persistence.
+ */
+function extractTodosFromTranscript(messages: Message[]): TodoList {
+  for (let i = messages.length - 1; i >= 0; i--) {
+    const msg = messages[i]
+    if (msg?.type !== 'assistant') continue
+    const toolUse = msg.message.content.find(
+      block => block.type === 'tool_use' && block.name === TODO_WRITE_TOOL_NAME,
+    )
+    if (!toolUse || toolUse.type !== 'tool_use') continue
+    const input = toolUse.input
+    if (input === null || typeof input !== 'object') return []
+    const parsed = TodoListSchema().safeParse(
+      (input as Record<string, unknown>).todos,
+    )
+    return parsed.success ? parsed.data : []
+  }
+  return []
+}
+
+/**
+ * Restore session state (file history, attribution, todos) from log on resume.
+ * Used by both SDK (print.ts) and interactive (REPL.tsx, main.tsx) resume paths.
+ */
+export function restoreSessionStateFromLog(
+  result: ResumeResult,
+  setAppState: (f: (prev: AppState) => AppState) => void,
+): void {
+  // Restore file history state
+  if (result.fileHistorySnapshots && result.fileHistorySnapshots.length > 0) {
+    fileHistoryRestoreStateFromLog(result.fileHistorySnapshots, newState => {
+      setAppState(prev => ({ ...prev, fileHistory: newState }))
+    })
+  }
+
+  // Restore attribution state (ant-only feature)
+  if (
+    feature('COMMIT_ATTRIBUTION') &&
+    result.attributionSnapshots &&
+    result.attributionSnapshots.length > 0
+  ) {
+    attributionRestoreStateFromLog(result.attributionSnapshots, newState => {
+      setAppState(prev => ({ ...prev, attribution: newState }))
+    })
+  }
+
+  // Restore context-collapse commit log + staged snapshot. Must run before
+  // the first query() so projectView() can rebuild the collapsed view from
+  // the resumed Message[]. Called unconditionally (even with
+  // undefined/empty entries) because restoreFromEntries resets the store
+  // first — without that, an in-session /resume into a session with no
+  // commits would leave the prior session's stale commit log intact.
+  if (feature('CONTEXT_COLLAPSE')) {
+    /* eslint-disable @typescript-eslint/no-require-imports */
+    ;(
+      require('../services/contextCollapse/persist.js') as typeof import('../services/contextCollapse/persist.js')
+    ).restoreFromEntries(
+      result.contextCollapseCommits ?? [],
+      result.contextCollapseSnapshot,
+    )
+    /* eslint-enable @typescript-eslint/no-require-imports */
+  }
+
+  // Restore TodoWrite state from transcript (SDK/non-interactive only).
+  // Interactive mode uses file-backed v2 tasks, so AppState.todos is unused there.
+  if (!isTodoV2Enabled() && result.messages && result.messages.length > 0) {
+    const todos = extractTodosFromTranscript(result.messages)
+    if (todos.length > 0) {
+      const agentId = getSessionId()
+      setAppState(prev => ({
+        ...prev,
+        todos: { ...prev.todos, [agentId]: todos },
+      }))
+    }
+  }
+}
+
+/**
+ * Compute restored attribution state from log snapshots.
+ * Used for computing initial state before render (e.g., main.tsx --continue).
+ * Returns undefined if attribution feature is disabled or no snapshots exist.
+ */
+export function computeRestoredAttributionState(
+  result: ResumeResult,
+): AttributionState | undefined {
+  if (
+    feature('COMMIT_ATTRIBUTION') &&
+    result.attributionSnapshots &&
+    result.attributionSnapshots.length > 0
+  ) {
+    return restoreAttributionStateFromSnapshots(result.attributionSnapshots)
+  }
+  return undefined
+}
+
+/**
+ * Compute standalone agent context (name/color) for session resume.
+ * Used for computing initial state before render (per CLAUDE.md guidelines).
+ * Returns undefined if no name/color is set on the session.
+ */
+export function computeStandaloneAgentContext(
+  agentName: string | undefined,
+  agentColor: string | undefined,
+): AppState['standaloneAgentContext'] | undefined {
+  if (!agentName && !agentColor) {
+    return undefined
+  }
+  return {
+    name: agentName ?? '',
+    color: (agentColor === 'default' ? undefined : agentColor) as
+      | AgentColorName
+      | undefined,
+  }
+}
+
+/**
+ * Restore agent setting from a resumed session.
+ *
+ * When resuming a conversation that used a custom agent, this re-applies the
+ * agent type and model override (unless the user specified --agent on the CLI).
+ * Mutates bootstrap state via setMainThreadAgentType / setMainLoopModelOverride.
+ *
+ * Returns the restored agent definition and its agentType string, or undefined
+ * if no agent was restored.
+ */
+export function restoreAgentFromSession(
+  agentSetting: string | undefined,
+  currentAgentDefinition: AgentDefinition | undefined,
+  agentDefinitions: AgentDefinitionsResult,
+): {
+  agentDefinition: AgentDefinition | undefined
+  agentType: string | undefined
+} {
+  // If user already specified --agent on CLI, keep that definition
+  if (currentAgentDefinition) {
+    return { agentDefinition: currentAgentDefinition, agentType: undefined }
+  }
+
+  // If session had no agent, clear any stale bootstrap state
+  if (!agentSetting) {
+    setMainThreadAgentType(undefined)
+    return { agentDefinition: undefined, agentType: undefined }
+  }
+
+  const resumedAgent = agentDefinitions.activeAgents.find(
+    agent => agent.agentType === agentSetting,
+  )
+  if (!resumedAgent) {
+    logForDebugging(
+      `Resumed session had agent "${agentSetting}" but it is no longer available. Using default behavior.`,
+    )
+    setMainThreadAgentType(undefined)
+    return { agentDefinition: undefined, agentType: undefined }
+  }
+
+  setMainThreadAgentType(resumedAgent.agentType)
+
+  // Apply agent's model if user didn't specify one
+  if (
+    !getMainLoopModelOverride() &&
+    resumedAgent.model &&
+    resumedAgent.model !== 'inherit'
+  ) {
+    setMainLoopModelOverride(parseUserSpecifiedModel(resumedAgent.model))
+  }
+
+  return { agentDefinition: resumedAgent, agentType: resumedAgent.agentType }
+}
+
+/**
+ * Refresh agent definitions after a coordinator/normal mode switch.
+ *
+ * When resuming a session that was in a different mode (coordinator vs normal),
+ * the built-in agents need to be re-derived to match the new mode. CLI-provided
+ * agents (from --agents flag) are merged back in.
+ */
+export async function refreshAgentDefinitionsForModeSwitch(
+  modeWasSwitched: boolean,
+  currentCwd: string,
+  cliAgents: AgentDefinition[],
+  currentAgentDefinitions: AgentDefinitionsResult,
+): Promise<AgentDefinitionsResult> {
+  if (!feature('COORDINATOR_MODE') || !modeWasSwitched) {
+    return currentAgentDefinitions
+  }
+
+  // Re-derive agent definitions after mode switch so built-in agents
+  // reflect the new coordinator/normal mode
+  getAgentDefinitionsWithOverrides.cache.clear?.()
+  const freshAgentDefs = await getAgentDefinitionsWithOverrides(currentCwd)
+  const freshAllAgents = [...freshAgentDefs.allAgents, ...cliAgents]
+  return {
+    ...freshAgentDefs,
+    allAgents: freshAllAgents,
+    activeAgents: getActiveAgentsFromList(freshAllAgents),
+  }
+}
+
+/**
+ * Result of processing a resumed/continued conversation for rendering.
+ */
+export type ProcessedResume = {
+  messages: Message[]
+  fileHistorySnapshots?: FileHistorySnapshot[]
+  contentReplacements?: ContentReplacementRecord[]
+  agentName: string | undefined
+  agentColor: AgentColorName | undefined
+  restoredAgentDef: AgentDefinition | undefined
+  initialState: AppState
+}
+
+/**
+ * Subset of the coordinator mode module API needed for session resume.
+ */
+type CoordinatorModeApi = {
+  matchSessionMode(mode?: string): string | undefined
+  isCoordinatorMode(): boolean
+}
+
+/**
+ * The loaded conversation data (return type of loadConversationForResume).
+ */
+type ResumeLoadResult = {
+  messages: Message[]
+  fileHistorySnapshots?: FileHistorySnapshot[]
+  attributionSnapshots?: AttributionSnapshotMessage[]
+  contentReplacements?: ContentReplacementRecord[]
+  contextCollapseCommits?: ContextCollapseCommitEntry[]
+  contextCollapseSnapshot?: ContextCollapseSnapshotEntry
+  sessionId: UUID | undefined
+  agentName?: string
+  agentColor?: string
+  agentSetting?: string
+  customTitle?: string
+  tag?: string
+  mode?: 'coordinator' | 'normal'
+  worktreeSession?: PersistedWorktreeSession | null
+  prNumber?: number
+  prUrl?: string
+  prRepository?: string
+}
+
+/**
+ * Restore the worktree working directory on resume. The transcript records
+ * the last worktree enter/exit; if the session crashed while inside a
+ * worktree (last entry = session object, not null), cd back into it.
+ *
+ * process.chdir is the TOCTOU-safe existence check — it throws ENOENT if
+ * the /exit dialog removed the directory, or if the user deleted it
+ * manually between sessions.
+ *
+ * When --worktree already created a fresh worktree, that takes precedence
+ * over the resumed session's state. restoreSessionMetadata just overwrote
+ * project.currentSessionWorktree with the stale transcript value, so
+ * re-assert the fresh worktree here before adoptResumedSessionFile writes
+ * it back to disk.
+ */
+export function restoreWorktreeForResume(
+  worktreeSession: PersistedWorktreeSession | null | undefined,
+): void {
+  const fresh = getCurrentWorktreeSession()
+  if (fresh) {
+    saveWorktreeState(fresh)
+    return
+  }
+  if (!worktreeSession) return
+
+  try {
+    process.chdir(worktreeSession.worktreePath)
+  } catch {
+    // Directory is gone. Override the stale cache so the next
+    // reAppendSessionMetadata records "exited" instead of re-persisting
+    // a path that no longer exists.
+    saveWorktreeState(null)
+    return
+  }
+
+  setCwd(worktreeSession.worktreePath)
+  setOriginalCwd(getCwd())
+  // projectRoot is intentionally NOT set here. The transcript doesn't record
+  // whether the worktree was entered via --worktree (which sets projectRoot)
+  // or EnterWorktreeTool (which doesn't). Leaving projectRoot stable matches
+  // EnterWorktreeTool's behavior — skills/history stay anchored to the
+  // original project.
+  restoreWorktreeSession(worktreeSession)
+  // The /resume slash command calls this mid-session after caches have been
+  // populated against the old cwd. Cheap no-ops for the CLI-flag path
+  // (caches aren't populated yet there).
+  clearMemoryFileCaches()
+  clearSystemPromptSections()
+  getPlansDirectory.cache.clear?.()
+}
+
+/**
+ * Undo restoreWorktreeForResume before a mid-session /resume switches to
+ * another session. Without this, /resume from a worktree session to a
+ * non-worktree session leaves the user in the old worktree directory with
+ * currentWorktreeSession still pointing at the prior session. /resume to a
+ * *different* worktree fails entirely — the getCurrentWorktreeSession()
+ * guard above blocks the switch.
+ *
+ * Not needed by CLI --resume/--continue: those run once at startup where
+ * getCurrentWorktreeSession() is only truthy if --worktree was used (fresh
+ * worktree that should take precedence, handled by the re-assert above).
+ */
+export function exitRestoredWorktree(): void {
+  const current = getCurrentWorktreeSession()
+  if (!current) return
+
+  restoreWorktreeSession(null)
+  // Worktree state changed, so cached prompt sections that reference it are
+  // stale whether or not chdir succeeds below.
+  clearMemoryFileCaches()
+  clearSystemPromptSections()
+  getPlansDirectory.cache.clear?.()
+
+  try {
+    process.chdir(current.originalCwd)
+  } catch {
+    // Original dir is gone (rare). Stay put — restoreWorktreeForResume
+    // will cd into the target worktree next if there is one.
+    return
+  }
+  setCwd(current.originalCwd)
+  setOriginalCwd(getCwd())
+}
+
+/**
+ * Process a loaded conversation for resume/continue.
+ *
+ * Handles coordinator mode matching, session ID setup, agent restoration,
+ * mode persistence, and initial state computation. Called by both --continue
+ * and --resume paths in main.tsx.
+ */
+export async function processResumedConversation(
+  result: ResumeLoadResult,
+  opts: {
+    forkSession: boolean
+    sessionIdOverride?: string
+    transcriptPath?: string
+    includeAttribution?: boolean
+  },
+  context: {
+    modeApi: CoordinatorModeApi | null
+    mainThreadAgentDefinition: AgentDefinition | undefined
+    agentDefinitions: AgentDefinitionsResult
+    currentCwd: string
+    cliAgents: AgentDefinition[]
+    initialState: AppState
+  },
+): Promise<ProcessedResume> {
+  // Match coordinator/normal mode to the resumed session
+  let modeWarning: string | undefined
+  if (feature('COORDINATOR_MODE')) {
+    modeWarning = context.modeApi?.matchSessionMode(result.mode)
+    if (modeWarning) {
+      result.messages.push(createSystemMessage(modeWarning, 'warning'))
+    }
+  }
+
+  // Reuse the resumed session's ID unless --fork-session is specified
+  if (!opts.forkSession) {
+    const sid = opts.sessionIdOverride ?? result.sessionId
+    if (sid) {
+      // When resuming from a different project directory (git worktrees,
+      // cross-project), transcriptPath points to the actual file; its dirname
+      // is the project dir. Otherwise the session lives in the current project.
+      switchSession(
+        asSessionId(sid),
+        opts.transcriptPath ? dirname(opts.transcriptPath) : null,
+      )
+      // Rename asciicast recording to match the resumed session ID so
+      // getSessionRecordingPaths() can discover it during /share
+      await renameRecordingForSession()
+      await resetSessionFilePointer()
+      restoreCostStateForSession(sid)
+    }
+  } else if (result.contentReplacements?.length) {
+    // --fork-session keeps the fresh startup session ID. useLogMessages will
+    // copy source messages into the new JSONL via recordTranscript, but
+    // content-replacement entries are a separate entry type only written by
+    // recordContentReplacement (which query.ts calls for newlyReplaced, never
+    // the pre-loaded records). Without this seed, `claude -r {newSessionId}`
+    // finds source tool_use_ids in messages but no matching replacement records
+    // → they're classified as FROZEN → full content sent (cache miss, permanent
+    // overage). insertContentReplacement stamps sessionId = getSessionId() =
+    // the fresh ID, so loadTranscriptFile's keyed lookup will match.
+    await recordContentReplacement(result.contentReplacements)
+  }
+
+  // Restore session metadata so /status shows the saved name and metadata
+  // is re-appended on session exit. Fork doesn't take ownership of the
+  // original session's worktree — a "Remove" on the fork's exit dialog
+  // would delete a worktree the original session still references — so
+  // strip worktreeSession from the fork path so the cache stays unset.
+  restoreSessionMetadata(
+    opts.forkSession ? { ...result, worktreeSession: undefined } : result,
+  )
+
+  if (!opts.forkSession) {
+    // Cd back into the worktree the session was in when it last exited.
+    // Done after restoreSessionMetadata (which caches the worktree state
+    // from the transcript) so if the directory is gone we can override
+    // the cache before adoptResumedSessionFile writes it.
+    restoreWorktreeForResume(result.worktreeSession)
+
+    // Point sessionFile at the resumed transcript and re-append metadata
+    // now. resetSessionFilePointer above nulled it (so the old fresh-session
+    // path doesn't leak), but that blocks reAppendSessionMetadata — which
+    // bails on null — from running in the exit cleanup handler. For fork,
+    // useLogMessages populates a *new* file via recordTranscript on REPL
+    // mount; the normal lazy-materialize path is correct there.
+    adoptResumedSessionFile()
+  }
+
+  // Restore context-collapse commit log + staged snapshot. The interactive
+  // /resume path goes through restoreSessionStateFromLog (REPL.tsx); CLI
+  // --continue/--resume goes through here instead. Called unconditionally
+  // — see the restoreSessionStateFromLog callsite above for why.
+  if (feature('CONTEXT_COLLAPSE')) {
+    /* eslint-disable @typescript-eslint/no-require-imports */
+    ;(
+      require('../services/contextCollapse/persist.js') as typeof import('../services/contextCollapse/persist.js')
+    ).restoreFromEntries(
+      result.contextCollapseCommits ?? [],
+      result.contextCollapseSnapshot,
+    )
+    /* eslint-enable @typescript-eslint/no-require-imports */
+  }
+
+  // Restore agent setting from resumed session
+  const { agentDefinition: restoredAgent, agentType: resumedAgentType } =
+    restoreAgentFromSession(
+      result.agentSetting,
+      context.mainThreadAgentDefinition,
+      context.agentDefinitions,
+    )
+
+  // Persist the current mode so future resumes know what mode this session was in
+  if (feature('COORDINATOR_MODE')) {
+    saveMode(context.modeApi?.isCoordinatorMode() ? 'coordinator' : 'normal')
+  }
+
+  // Compute initial state before render (per CLAUDE.md guidelines)
+  const restoredAttribution = opts.includeAttribution
+    ? computeRestoredAttributionState(result)
+    : undefined
+  const standaloneAgentContext = computeStandaloneAgentContext(
+    result.agentName,
+    result.agentColor,
+  )
+  void updateSessionName(result.agentName)
+  const refreshedAgentDefs = await refreshAgentDefinitionsForModeSwitch(
+    !!modeWarning,
+    context.currentCwd,
+    context.cliAgents,
+    context.agentDefinitions,
+  )
+
+  return {
+    messages: result.messages,
+    fileHistorySnapshots: result.fileHistorySnapshots,
+    contentReplacements: result.contentReplacements,
+    agentName: result.agentName,
+    agentColor: (result.agentColor === 'default'
+      ? undefined
+      : result.agentColor) as AgentColorName | undefined,
+    restoredAgentDef: restoredAgent,
+    initialState: {
+      ...context.initialState,
+      ...(resumedAgentType && { agent: resumedAgentType }),
+      ...(restoredAttribution && { attribution: restoredAttribution }),
+      ...(standaloneAgentContext && { standaloneAgentContext }),
+      agentDefinitions: refreshedAgentDefs,
+    },
+  }
+}