feat: add sdg training data bridge

AGENTS.md

@@ -19,6 +19,8 @@
 - Codex logger smoke test: `scripts/codex-run-logger.sh`
 - Precommit/CI check: `scripts/precommit-check.sh`
 - Codex environment: `.codex/environments/environment.toml`
+- Training data dry run: `python3 scripts/generate_training_data.py --dry-run`
+- Local training data bridge: `python3 scripts/generate_training_data.py`
 
 ## Environment
 
@@ -46,6 +48,17 @@ Use `.env` for local values and keep it out of git. Update `.env.example`, `READ
 - Do not manually edit generated dictionary files.
 - Generated metadata includes `dictionary_version`, `registry_checksum`, `static_base_checksum`, and `codebook_checksum`.
 
+## SDG Bridge Rules
+
+- `SDG_BRIDGE_PLAN.md` documents the local-to-Data-Designer bridge design.
+- `scripts/generate_training_data.py` reads generated dictionary artifacts and produces instruction-format seed datasets.
+- Default output is `../workspace_Data/data/module_controller_intents_<unix_ts>/`.
+- Default manifest patch target is `../workspace_Data/manifest.llm.json`.
+- Use `--dry-run` for validation; it must not write output data or patch manifests.
+- Mimir/Data Designer expansion only runs when `--sdg-host`, `--sdg-user`, and `--sdg-key` are all provided.
+- Do not start or restart Mimir llama.cpp/Keiro from this bridge.
+- If Mimir expansion fails, the bridge keeps the local seed dataset, writes `SDG_ERROR.txt`, patches the manifest with `generated_local_remote_failed`, and exits non-zero.
+
 ## Dispatch Rules
 
 - Dispatch only exact `action_id` values present in `dictionary/actions.index.json`.
@@ -81,4 +94,5 @@ Use `.env` for local values and keep it out of git. Update `.env.example`, `READ
 - Keep the CLI Rust-first and small.
 - Prefer adding scripts under `src/scripts/` and registering them in `src/registry.rs`.
 - Add focused tests for parsing, dictionary generation, action lookup, and payload validation.
+- Add stdlib Python tests for bridge behavior in `tests/` when changing `scripts/generate_training_data.py`.
 - Run `cargo test` before handing off code changes.