docs: complete factual audit pass 2 — 90+ corrections

Second 10-agent parallel audit covering all remaining sections:
ultimate-guide.md (ch1-ch11), workflows/ (17 files), quiz/ (12 files),
examples/agents+skills+commands. Source of truth: official Anthropic docs.

Key corrections:

Hook system (+8 missing events):
- Complete 17-event list: PermissionRequest, PostToolUseFailure, SubagentStart,
  TeammateIdle, TaskCompleted, WorktreeCreate, WorktreeRemove, SessionEnd
- SessionStart confirmed valid (previous audit wrongly doubted it)
- Hook output format: hookSpecificOutput.permissionDecision (not {"decision":"block"})
- Missing common input fields added: transcript_path, cwd, permission_mode

Agent YAML frontmatter (13 valid fields restored/added):
- Restored: disallowedTools, memory, background, isolation, skills, permissionMode, hooks
- Added new: maxTurns, mcpServers
- Fixed: tools format is comma-separated (not space-separated)

Plan Mode (12 occurrences fixed):
- Ctrl+G = "open plan in text editor" (NOT "enter plan mode")
- Plan Mode = Shift+Tab × 2 (Normal → acceptEdits → plan)

Commands table (10.1) + built-in commands (6.1):
- Added 18+ missing commands: /copy, /doctor, /hooks, /memory, /model,
  /config, /permissions, /remote-control, /rename, /resume, /sandbox, etc.

Workflow files:
- agent-teams.md: removed fake --experimental-agent-teams flag
- hooks.yaml + post_edit event → settings.json + PostToolUse (2 files)
- TodoWrite → TaskCreate/TaskUpdate (3 files)
- task-management.md: removed fake "failed" task status

Quiz / examples:
- 01-010: Esc stops mid-action (not Ctrl+C)
- refactoring-specialist.md: removed MultiEdit (not a valid tool)
- ast-grep-patterns.md: name field (not title)
- validate-changes.md, diagnose.md: field name fixes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

guide/workflows/task-management.md

@@ -35,7 +35,7 @@ Task management in Claude Code evolved significantly in v2.1.16 with the introdu
 | **Multi-session** | ❌ Lost on session end | ✅ Survives across sessions |
 | **Dependencies** | ❌ Manual ordering | ✅ Task blocking (A blocks B) |
 | **Coordination** | Single agent | ✅ Multi-agent with broadcast |
-| **Status tracking** | pending/in_progress/completed | pending/in_progress/completed/failed |
+| **Status tracking** | pending/in_progress/completed | pending/in_progress/completed |
 | **When to use** | Simple single-session todos | Complex multi-session projects |
 
 **Migration flag** (v2.1.19+):
@@ -207,7 +207,7 @@ Tasks for 'auth-system-v2':
 # ✅ Task remains completed
 
 # If tests fail:
-> "TaskUpdate task-refresh status=failed, add error details to metadata"
+> "TaskUpdate task-refresh status=in_progress, add error details to metadata and fix issues"
 ```
 
 ---
@@ -373,7 +373,7 @@ Convert strategic plans into executable task hierarchies.
 ```bash
 # Step 1: Enter plan mode
 claude
-> "Shift+Tab×2" # Enter plan mode
+> [Press Shift+Tab to enter Plan Mode]
 
 # Step 2: Create architectural plan
 > "Design architecture for microservices migration:
@@ -659,7 +659,7 @@ TaskUpdate: {id: "login-feature", status: "completed"}
 # If tests pass:
 TaskUpdate: {id: "login-feature", status: "completed", metadata: {test_results: "pass"}}
 # If tests fail:
-TaskUpdate: {id: "login-feature", status: "failed", metadata: {test_results: "3 failures", error_log: "..."}}
+TaskUpdate: {id: "login-feature", status: "in_progress", metadata: {test_results: "3 failures", error_log: "..."}}
 ```
 
 ---