Normalize agent instructions and workplan frontmatter (STATE-WP-0067)

- Align agent files with on-disk workplan prefixes (infer from workplan ids)
- Set workplan domain to registered domain_slug; add topic_slug where applicable
- Repair frontmatter delimiter formatting; migrate legacy task status literals
- Regenerate AGENTS.md, CLAUDE.md, and .claude/rules from State Hub templates

.claude/rules/stack-and-commands.md

@@ -1,43 +1,19 @@
-## Stack and Commands
+## Stack
 
-**Language:** Python 3.8+
-**Package manager:** uv / pip (`.venv/`)
-**Test runner:** pytest
-**Linter/formatter:** flake8 (100-char), black (88-char), mypy (strict)
+<!-- TODO: Fill in language, frameworks, and key dependencies -->
+- **Language:**
+- **Key deps:**
 
-### Essential commands
+## Dev Commands
 
 ```bash
-make setup-complete     # First-time setup: venv + package + dev deps
-source .venv/bin/activate
-make test               # Run full test suite
-make lint               # flake8 linting
-make format             # black formatting
-make clean              # Remove build artifacts
+# TODO: Fill in the standard commands for this repo
+
+# Install dependencies
+
+# Run tests
+
+# Lint / type check
+
+# Build / package (if applicable)
 ```
-
-### TDD workflow
-
-```bash
-make tdd-start ISSUE=X  # Start issue with requirements validation
-make tdd-add-test       # Add test to current workspace
-make tdd-status         # Show workspace state
-make tdd-finish         # Move tests to main suite
-```
-
-### Issue management
-
-```bash
-make issue-list         # All issues (Gitea)
-make issue-list-open    # Open backlog
-make issue-show ISSUE=X # Issue detail
-make issue-create TITLE='...' BODY='...'
-```
-
-Run `make help` to see all available targets.
-
-### Core dependencies (pyproject.toml)
-
-- `pyyaml>=6.0` — YAML config
-- `click>=8.0.0` — CLI framework
-- `pydantic>=2.0.0` — Data validation