fix: three ask/drift bugs matching issues #39, #40, #41

[ChelseaKR]

Confirmed and fixed three real bugs found during a user bug sweep, each already
diagnosed with a precise repro in an open GitHub issue but not yet fixed in code.

• verify._COLLAPSE (src/disclosed/ask/verify.py) missed "does not report", "did not
  report", "not published", and "never reported" -- the most natural phrasing for a
  disclosure project's own absence-collapse defect. A correctly cited claim using it
  passed the verifier untouched. Closes the gap in the regex and adds four cases to
  tests/test_narrate_verify.py. (ask.verify: 'does not report'/'did not report' phrasing bypasses the five-state-collapse check #39)

• verify._check_claim's classification-fidelity check was skipped whenever a claim
  named a state but cited no ClassificationRecord -- e.g. a claim citing only a
  drift or contradiction id, both of which are citable per Pack.citable_ids() but
  prove nothing about one institution's one field. Such a claim now withholds
  outright, with the same exemption a note-only citation has always had. New test
  in tests/test_narrate_verify.py reproduces the drift-only case from the issue. (ask.verify: classification-fidelity check silently skipped when a claim cites only a drift or contradiction record #40)

• drift.FieldDrift.direction returned "lost" when rate_change is exactly 0.0 (the
  applicable population and the reporter count both moved, in exact proportion, so
  the record is not skipped by compare()) -- the same "absence rendered as a value"
  defect this module's own docstring argues against, on its own direction word.
  "unchanged" is now its own case. Updated the narrate.py prompt to describe the
  third direction word, fixed the self-referential assertion in
  tests/test_evidence.py's test_direction_is_the_projects_not_recomputed (it
  reasserted the buggy formula rather than the stated intent), and added a
  dedicated repro in tests/test_grading.py. (drift.FieldDrift.direction labels an unchanged reporting rate as 'lost' #41)

make verify green: ruff, ruff format --check, strict mypy, pytest 702 passed
(696 + 6 new), 98.43% branch coverage (floor 90%).

Co-Authored-By: Claude Sonnet 5 noreply@anthropic.com
Claude-Session: https://claude.ai/code/session_01QAQ3ihpVCk6n3HBswNEcEi

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Recovered work. This commit (0e8568f) was finished on 2026-08-23 and had been sitting unpushed on a local branch since, existing nowhere but one laptop. It was found during a portfolio-wide sweep that turned up eleven such commits across eleven repositories, all from the same dated branch.

It is pushed and opened as-is, unmodified, so the original work is preserved and reviewable. CI on this PR is the first time it has been exercised anywhere but locally; the push itself passed this repository pre-push gate.

Not reviewed or revised by the sweep that recovered it, so read it on its own merits.

Claude Code session: https://claude.ai/code/session_01Eiyip1cjoUeAPGkZAsZsd9