docs(policies): point docs at docs/policies/ and document trajectory_hint exception (#68)

[amasen02]

Summary

Fixes #68 — updates src/tokenops/control/policies/__init__.py to point governance documentation to docs/policies/ instead of non-existent tokenops-lld/policies/, and notes the trajectory_hint configuration exception.

Changes

1. Corrected docstring path reference from tokenops-lld/policies/ to docs/policies/.
2. Documented why trajectory_hint is not exported alongside the other policy templates (requires a Store and is configured in src/tokenops/control/config.py).

Checklist

• Corrected documentation link path
• Documented trajectory_hint design exception
• Staged as Draft PR

[tishachawla-jg]

Verified against current `main` and both changes hold:

• `tokenops-lld/` does not exist in this repo; `docs/policies/` does, with 11 pages. The docstring pointed at a dead path.
• `trajectory_hint` is confirmed absent from this module's imports/`all`, and is exactly where you said: special-cased in `src/tokenops/control/config.py` because it needs a `Store`.

Ran the full suite on this branch: ruff clean, ruff format clean, mypy clean on 54 files, 218 passed, 2 skipped.

I approved the blocked CI run on the fork, it's now green on 3.10/3.11/3.12.

This is marked as a draft, thanks for flagging it that way. Ping this thread (or mark it "Ready for review") whenever you want it merged, and it'll go in as-is; nothing here needs changes from my side.