docs: move specs from doc/specs to docs/specs

AGENTS.md

@@ -9,7 +9,7 @@
 5. Every correction: reflect on the mistake, plan to avoid repeating it.
 6. All updates must be happened on the worktree branch, not main. 
 7. Use `brainstate.random` instead of `jax.random` directly for all random number generation. 
-8. Write spec and plan under `doc/specs` before implementation, so they're available for reference during implementation.
+8. Write spec and plan under `docs/specs` before implementation, so they're available for reference during implementation.
 9. Tests should >90% coverage, but focus on meaningful tests that cover edge cases and critical paths, not just trivial lines. 
 10. Maintain compatibility with JAX versions >= 0.9.0. Guard any version-specific behavior in `brainstate/_compatible_import.py`, preferring feature/shape detection over hard version checks.
 

doc/specs/2026-10-audit-fixes.md → docs/specs/2026-10-audit-fixes.md

@@ -10,7 +10,7 @@ Decisions already made:
 
 Workflow, per AGENTS.md:
 1. Create the worktree branch `fix/audit-high-medium`. Nothing is committed to main.
-2. Write a spec at `doc/specs/2026-10-audit-fixes.md`, a copy of this plan with the bug table.
+2. Write a spec at `docs/specs/2026-10-audit-fixes.md`, a copy of this plan with the bug table.
 3. For each bug, first write a failing regression test in the matching `*_test.py`, then make the fix.
 4. Use `brainstate.random` in tests, never `jax.random`.
 5. Version-specific code goes in `_compatible_import.py`, using feature detection.