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

docs/devlog/DEVLOG_LLM.md

@@ -60,3 +60,58 @@ This log is concise and structured for quick machine parsing and summarization.
   - Limited chat announcements to collab/questions, collab/proposals, collab/plan only
 - next:
   - Announce only those; log everything else here
+\n+## 2025-09-17T15:20Z
+- context: Oriented to existing questions/proposal and prepared to proceed
+- actions:
+  - Added `collab/questions/01-codexhelper.md` and `.llm.md` to confirm proposal acceptance
+- decisions:
+  - Defer plan creation until explicit "Approved for Plan"
+- next:
+  - Await responses in `collab/questions/01-codexhelper.md`
+  - On approval, create `collab/plan/01-codexhelper.md` and start implementation
+
+## 2025-09-17T15:28Z
+- context: One-way progression clarified; avoid back-stepping
+- actions:
+  - Updated AGENTS.md with one-way progression and in-place editing rules
+  - Moved confirmation checklist into `collab/proposals/01-codexhelper.{md,llm.md}`
+  - Removed `collab/questions/01-codexhelper.*`
+- next:
+  - Await proposal approval in `collab/proposals/01-codexhelper.md`
+  - Then draft `collab/plan/01-codexhelper.md`
+
+## 2025-09-17T15:36Z
+- context: One-time direct capture of global system prompt per user instruction
+- actions:
+  - Added `prompts/global/system.md` and `prompts/global/system.llm.md`
+  - Updated AGENTS.md to reference and align with the global system prompt
+- decisions:
+  - System prompt will govern agent behavior across projects; `.llm.md` used for intake, both siblings written
+- next:
+  - Use these artifacts going forward; keep them in sync
+
+## 2025-09-17T15:42Z
+- context: Seed AGENTS templates requested for bootstrap and project scaffolding
+- actions:
+  - Added `meta/AGENTS.seed.md` and `meta/AGENTS.seed.llm.md`
+  - Added `templates/project/_shared/AGENTS.md` for project scaffolding
+  - Updated AGENTS.md to reference the seed templates
+- next:
+  - Include the project AGENTS.md when implementing scaffolding
+
+## 2025-09-17T15:48Z
+- context: Folded meta and prompts/global into proposal so plan will include them
+- actions:
+  - Updated `collab/proposals/01-codexhelper.{md,llm.md}` to explicitly list `meta/` seeds, `templates/project/_shared/AGENTS.md`, and `prompts/global/`
+  - Added acceptance criteria ensuring AGENTS.md is copied and prompts/global is used
+- next:
+  - Await proposal approval; then reflect these in the plan
+
+## 2025-09-17T15:55Z
+- context: Global propagation rule requested for process adjustments across projects
+- actions:
+  - Added Governance/Propagation sections to `prompts/global/system.{md,llm.md}`
+  - Updated seed and project AGENTS templates to include propagation guidance
+  - Reflected governance/propagation in proposal files
+- next:
+  - Use this rule for future non-project-specific changes