navi_code: enable planning phase 2 (structured review) ...

phase1 already emits REFLECT: yes|no, but with phase2 off the flag was a
dead-end. Enabling phase2 runs a Critic/Pragmatist/Detailer review pass
before phase3 whenever phase1 flags the task as complex (REFLECT: yes),
feeding "Plan Adjustments" into the execution plan. Skipped for simple
tasks and subagents (gated on `needs_reflect and not is_subagent`), so
the extra LLM call only lands on complex parent-agent work.

Resolves F8 machinery-gap G.

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

agent: bounded autonomy — scope boundary + observe-vs-act ...

navi_code had unwanted "free flight": an observe request ("look at a
directory") triggered the full Phase 3 plan with milestones + auto-todo,
and goal_anchoring then drove the agent to finish those steps, climbing
into sibling projects and executing milestone docs it found.

Two toggleable, default-off profile flags (on for navi_code):

- scope_boundary_enabled: injects a standing system message keeping the
  agent within the literally requested scope; forbids acting on
  discovered TODO/roadmap/milestone docs (report only).
- observe_skips_plan_enabled: Phase 1 classifies MODE: observe|act; an
  observe request skips Phase 2/3 — no multi-step plan, no auto-todo, no
  "execute step by step" prompt. The agent just gathers info and answers.
  Independent of force_plan (observe on the first message still skips).

Free flight stays reproducible by flipping both flags off.

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

profiles: add gemma4:12b-it-qat-128k as top-priority model ...

New local QAT model added at the head of the model priority list across
all profiles, so it is preferred first with cloud fallback.

compressor: structured summaries, profile-aware compression, adaptive keep_recent ...

- Replace free-form summary with strict Markdown template (Goal, Active Files,
  Decisions, Completed Work, Pending Work/Todo, Errors, Key Values).
- Keep filesystem/code_exec/terminal tool results and messages with
  is_compression_critical=True verbatim during compression instead of 300-char truncation.
- Make compression profile-aware: AgentProfile gains compression_keep_recent,
  compression_max_tokens, compression_prompt_file. navi_code uses dedicated
  compression prompt and larger keep_recent/max_tokens.
- Adaptive partition_messages(): important turns (user corrections, errors,
  critical tools) survive longer; filler/social turns compress sooner.
- Increase default context_summary_max_tokens from 3000 to 4000.
- Propagate active profile changes to ContextCompressor and SubAgentRunner.

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

Update Navi Code profile: config, prompts, docs, and env example ...

- Sync navi_code profile tools with current codebase (memory, schedule_recall, manage_recall, switch_profile, list_profiles)

- Remove image_view and MCP tools from navi_code; keep local terminal focus

- Update system prompt and persona for terminal-first coding assistant

- Update docs/navi_code.md, docs/profiles.md, docs/config.md for new tool set

- Refresh .env.navi_code.example with current config variables

- Remove stale CLI prototype directories (cli/, navi_code_cli/)

Docs: actualize navi_code tool lists and key_tools ...

- docs/navi_code.md and docs/profiles.md now correctly list native tools,
  MCP navi-web tools, and excluded tools.
- image_view is documented as enabled for the agent (loads and describes
  images for the model, not shown to the user).
- web_search/http_request are documented as MCP navi-web tools, not native
  disabled tools.
- navi/profiles/navi_code/config.json: updated full_description.key_tools to
  match actual resolved tool names.

Tests: 459 passed, 1 skipped.

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

Navi Code: Phase 1 — terminal-first profile, default profile mechanism, env/persona, tests ...

- Add navi_code profile (terminal-first coding assistant)
- Add NAVI_DEFAULT_PROFILE_ID setting and POST /sessions default profile fallback
- Add persona_navi_code.txt and .env.navi_code.example
- Add docs/plan_navi_code.md phased plan
- Update tests to verify default-profile selection in no-auth mode

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