UR-Nexus 1.68.0

• Removed @ts-nocheck from 73 files, putting 21,503 previously unchecked lines
  under tsc. Every one of those files produced zero errors once the
  suppression was lifted — they were not suppressed because they were broken,
  they were suppressed and then fixed, or never needed it. The blind spot was
  33% larger than the actual debt. Typecheck remains clean at exit 0.

• Added test/typeCheckCoverage.test.ts, a ratchet: the @ts-nocheck count may
  fall but never rise, and the budget must be lowered when files come off the
  list so it cannot silently stop ratcheting. It also asserts that query.ts,
  permissions.ts, filesystem.ts and toolExecution.ts are still suppressed
  — a standing reminder that the highest-consequence files are the unchecked
  ones, with instructions to delete the test when that stops being true.

• Remaining debt, measured rather than estimated: 150 files, ~870 errors, but
  concentrated — 3 files hold 231 of them, while 95 files have 3 or fewer each
  and 135 have 10 or fewer. Of the total, 32 are dead build-constant comparisons
  from the fork ('external' === 'ant') and 562 are property-access-on-any.
  The 95 cheap files are the next batch.

• Restored the worked examples in the TodoWrite tool prompt, with their
  narrated tool use removed. After 1.65.5 that
  prompt was cut from 184 lines to 48, which removed every demonstration and
  left only abstract rules ("work is non-trivial when it needs planning,
  investigation, multiple deliverables..."). A large model infers intent from
  rules; a small local model pattern-matches on examples. Task lists stopped
  being produced, and the task-list gate was then hardened over five successive
  commits to force what the prompt no longer taught — which is what produced
  refused writes and retry loops on small models. The newer lifecycle rules are
  good and are kept; what returns is seven worked examples covering when to use
  the list, when not to, and why, including the single-file case where one Write
  call still warrants a plan.

Also in this release (was staged as 1.67.0)

• Two subsystems loaded behind feature flags were not merely disabled, they
  were broken in a way that only showed if you enabled them.
  services/compact/reactiveCompact.ts did not exist on disk at all, yet
  query.ts requires it by path and /compact calls two functions on it;
  services/contextCollapse/index.ts was a stub exporting four names while
  query.ts called four different ones, three of which were absent. Setting
  either flag would have failed on the first turn with MODULE_NOT_FOUND or
  "is not a function" rather than degrading to "feature off". Both modules now
  export the full surface their callers use, returning result-shaped objects
  instead of null so property access on the result cannot throw.

• Neither was reachable in shipped builds — the bundler passes only VOICE_MODE
  and CHICAGO_MCP, and live context management runs through
  services/compact/autoCompact.ts, which is real and unaffected.

• Added test/optionalSubsystems.test.ts, which derives the required exports
  from what query.ts actually calls rather than from a hand-written list, so
  a new call site cannot reintroduce the gap. It also asserts autoCompact has
  not itself become a stub.

• Audit note: 223 files carry @ts-nocheck and are invisible to
  tsc --noEmit. Stripping the suppressions in a scratch copy surfaces 872
  errors across ~108k lines, including query.ts, permissions.ts and
  filesystem.ts. Both defects above sat inside that blind spot.

• The original examples narrated tool use as prose ("* Uses the Edit tool to
  add a comment *", "Executes: npm install"), which is the exact anti-pattern
  the same prompt forbids in its closing paragraph — and what a small model
  copies when it reports a file as written without calling Write. That is why
  the examples were cut, and cutting them was not baseless; it just took the
  decision guidance with it. They now return without the narration.