fix(implement): spec-reviewer routes reality-contradicted task text to unclear

A requirement whose scripted literal is contradicted by verified
reality (or by another requirement of the same task) is a plan defect,
not a missing requirement: the persona and the loop's dispatch prompt
now direct that case to status `unclear`, which the loop already maps
to an immediate spec-ambiguous BLOCKED for the orchestrator to
adjudicate.

Grounding (aura runs, 2026-07-12): two of the last three cycles' four
review-loop-exhausted BLOCKs were exactly this shape. wot-241-t34
(wf_2c988736) re-flagged the same empirically-false exit-code literal
(task text Some(1), binary provably exits 2) as non_compliant across
all three rounds; wot-241-t4 (wf_f8fe5359) did the same for an
internally contradictory task (step 1 binds every param the step-5
sweep needs free) while its reviewer's own ambiguity field conceded the
text was "technically infeasible". Both burned two repair rounds that
could not converge before BLOCKing; the unclear route ends the same
runs after round one with the contradiction named.

The persona gains a "Task text vs reality" section (verify the
implementer's documented deviation yourself; unforced deviation stays
non_compliant), the matching rationalisation-table row, and a red flag;
the status protocol states that unclear outranks non_compliant for
verified contradictions.

implement/workflows/implement-loop.js

@@ -611,6 +611,10 @@ async function runTask(task) {
     const spec = await agent(
       `${STANDING}\n\nSpec-compliance review of task ${task.id}. Compare \`git diff HEAD\` against the task ` +
         'text ONLY — list missing requirements and unrequested extras. No quality opinions, no fix proposals. ' +
+        'If a requirement can only be judged missing because its scripted literal is contradicted by reality ' +
+        'you have verified yourself (the actual behaviour provably differs from what the task text asserts), or ' +
+        'two task requirements contradict each other, report status `unclear` with the contradiction in ' +
+        '`ambiguity` — never `non_compliant` for a reality-forced deviation, which no repair can resolve. ' +
         `Focus on the files this task claims to touch.\n\nTASK ${task.id} — ${task.title}\n${task.text}`,
       { agentType: 'spec-reviewer', model: 'sonnet', effort: 'high', label: `spec:${task.id}`, phase: 'Per-task loop', schema: SPEC_SCHEMA },
     )