semantics

.opencode/agents/fullstack-coder.md

@@ -165,6 +165,17 @@ request:
 - No retained workaround without local `@RATIONALE` and `@REJECTED`.
 - No implementation may silently re-enable an upstream rejected path.
 
+## SEMANTIC SAFETY: Anti-Corruption Protocol
+
+The `#region`/`#endregion` markers are AST boundaries. Breaking them destroys the semantic index. Same rules as python-coder:
+
+1. **Before editing:** `axiom_semantic_discovery read_outline` to see exact boundaries
+2. **Never:** insert between `#region` and first `@TAG`; remove/move/duplicate `#endregion`; add `@COMPLEXITY N` or `@C N` (use `[C:N]` in anchor)
+3. **After editing:** verify with `read_outline` — all pairs must match
+4. **If corrupted:** roll back immediately, do not continue editing
+5. **One file at a time** — verify between files
+6. **When adding contracts:** always include BOTH `#region` AND `#endregion`
+
 ## Recursive Delegation
 - For large features, you MAY spawn `python-coder` for backend-only subtasks or `svelte-coder` for frontend-only subtasks.
 - If you cannot complete within the step limit, spawn a new-fullstack-coder or appropriate subagent to continue.