docs: comprehensive accuracy audit fixes (35+ corrections)

CRITICAL fixes:
- Installation: Remove false prerequisites (installer auto-installs everything except git)
- Tools: Remove non-existent 'web_crawl' tool from tools table
- Memory: Remove non-existent 'read' action (only add/replace/remove exist)
- Code execution: Fix 'search' to 'search_files' in sandbox tools list
- CLI commands: Fix --model/--provider/--toolsets/--verbose as chat subcommand flags

IMPORTANT fixes:
- Installation: Add missing installer features (Node.js, ripgrep, ffmpeg, skills seeding)
- Installation: Add 6 missing package extras to table (mcp, honcho, tts-premium, etc)
- Installation: Fix mkdir to include all directories the installer creates
- Quickstart: Add OpenAI Codex to provider table
- CLI: Fix all 'hermes --flag' to 'hermes chat --flag' across all docs
- Configuration: Remove non-existent --max-turns CLI flag
- Tools: Fix 'search' to 'search_files', add missing 'process' tool
- Skills: Remove skills_categories() (not a registered tool)
- Cron: Remove unsupported 'daily at 9am' schedule format
- TTS: Fix output directory to ~/.hermes/audio_cache/
- Delegation: Clarify depth limit wording
- Architecture: Fix default model, chat() signature, file names
- Contributing: Fix Python requirement from 3.11+ to 3.10+
- CLI reference: Add missing commands (login, tools, sessions subcommands)
- Env vars: Fix TERMINAL_DOCKER_IMAGE default, add HERMES_MODEL

website/docs/user-guide/features/delegation.md

@@ -33,7 +33,7 @@ delegate_task(tasks=[
 ## Key Properties
 
 - Each subagent gets its **own terminal session** (separate from the parent)
-- **Depth limit of 2** — no grandchildren
+- **No nested delegation** — children cannot delegate further (no grandchildren)
 - Subagents **cannot** call: `delegate_task`, `clarify`, `memory`, `send_message`, `execute_code`
 - **Interrupt propagation** — interrupting the parent interrupts all active children
 - Only the final summary enters the parent's context, keeping token usage efficient