feat: add global system prompt and seed AGENTS templates; update proposal to include meta/ and prompts/global/; add project AGENTS template\n\nchore: update AGENTS.md and dev logs; encode governance/propagation rule

meta/AGENTS.seed.llm.md

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+# AGENTS (Seed, LLM)
+
+- One-way workflow: questions → proposal → plan → implement; no backsteps after approval.
+- Read `.llm.md` only; write both `.md` and `.llm.md` siblings for collab artifacts.
+- Chat ≤5 lines; default “Updated <filepath>…”; no diffs; announce only collab file changes; log details in `docs/devlog/`.
+- Keep changes minimal and focused; add tests with features; consistent style.
+- Git: Conventional Commits; branch `main`; optional tags `YYYY-MM-DD-HHMM`.
+- Tools: file-first; use `rg`; read ≤250 lines; respect sandbox/approvals; preface grouped commands.
+- Prompts/config (if applicable): YAML+yq; precedence CLI>ENV>project>mode>global; prompts order global→mode-system?→mode→project; outputs to `runs/<ts>/`; `--force` to overwrite; never `git push`.
+
+- Governance: For reusable rules, update system prompt and AGENTS templates; keep them aligned; log in DevLog.

meta/AGENTS.seed.md

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+# AGENTS.md — Seed Template (For New Projects)
+
+Scope: Applies to the entire project repository unless overridden by a deeper AGENTS.md.
+
+Note: This is a template copied into generated projects. Customize as needed for your project. Keep this AGENTS.md aligned with your system prompt and collaboration norms.
+
+## Collaboration Artifacts
+- Root: `collab/`
+- Subdirectories: `collab/questions/`, `collab/proposals/`, `collab/plan/`
+- Naming per round: `NN-<subject>.md` (e.g., `00-bootstrap.md`, `01-feature.md`).
+- LLM-optimized copies: add `.llm.md` siblings (machine-friendly).
+- Versioning: start a new numbered file for major rounds; do not grow one file indefinitely.
+- Principle: Keep chat minimal; prefer file-based collaboration via these docs.
+
+### Sequencing Rules (One-Way)
+- Start with questions; after approval, proceed to proposal; after approval, proceed to plan; then implement.
+- Once a step is approved, never return to a prior step. Perform edits within the current step’s file for that round and only create the next step’s file when moving forward.
+- The agent reads `.llm.md` files; humans edit `.md`. The agent writes both `.md` and `.llm.md` siblings.
+
+## Logs and Documentation
+- Dev logs: `docs/devlog/DEVLOG_LLM.md` and `docs/devlog/DEVLOG_HUMAN.md` — add an entry for each meaningful change.
+- Project docs: `docs/` for feature docs (`<feature>.md`) and architectural decisions (`adr-<feature>.md`).
+- Keep `README.md` current with quickstart and usage.
+
+## Code and Tests
+- Keep changes minimal and focused; avoid unrelated refactors.
+- Add unit tests in `tests/` alongside features.
+- Maintain consistent style with the existing codebase.
+
+## Git Workflow
+- Branch: `main` (unless project policy differs).
+- Commits: concise, present-tense; Conventional Commits style (`feat:`, `fix:`, `chore:`).
+- Releases/Tags: `YYYY-MM-DD-HHMM` when warranted.
+
+## Chat Output Policy
+- Default message: `Updated <filepath>. Read/edit and let me know.`
+- Keep chat ≤5 lines; no diffs or large pastes.
+- Only announce changes to collaboration files in `collab/`; log details in DevLog.
+
+## Tooling and Safety
+- Use filesystem-first workflow; prefer `rg` for search; read files in ≤250-line chunks.
+- Respect sandbox/approval constraints; avoid destructive actions without confirmation.
+- Provide a short preamble before grouped/long-running tool calls.
+
+## Prompts/Configuration (if applicable)
+- If using a wrapper like CodexHelper: YAML config preferred; precedence `CLI > env > project > mode > global`.
+- Prompt composition order: Global system → Mode system overlay (optional) → Mode rules → Project narrative.
+- Outputs: write run artifacts to `<project>/runs/<timestamp>/...`.
+- Safety: do not overwrite without `--force`; never `git push` on behalf of users.
+
+## Token/Context Hygiene
+- Keep chat minimal; rely on files and dev logs.
+- Avoid re-reading large files in chat; reference exact file paths.
+
+## Governance and Propagation
+- When introducing non-project-specific collaboration or workflow rules, mirror them in your project’s system prompt and this AGENTS.md template so they persist across projects.
+- Keep AGENTS.md aligned with your system prompt; log such changes in `docs/devlog/`.
+
+---
+
+Customize this AGENTS.md to fit your project specifics while preserving the one-way collaboration flow and file-first practices.