Auditor: KB query check + verdict orchestrator + Gitea poster

auditor/checks/kb_query.ts (task #7) — reads data/_kb/outcomes.jsonl,
error_corrections.jsonl, data/_observer/ops.jsonl, data/_bot/cycles/*.
Cheap/offline: no model calls, tail-reads only. Fail-rate >30% in
recent scenario outcomes → warn; otherwise info. Live-proven: 1
finding emitted against current KB state (69 scenario runs, 27.7%
fail rate — below warn threshold).

auditor/audit.ts (task #8) — orchestrator. Runs static + dynamic +
inference + kb_query in parallel, calls assembleVerdict, persists
to data/_auditor/verdicts/, posts to Gitea (commit status + issue
comment). AuditOptions supports skip_dynamic/skip_inference/dry_run
for iteration.

auditor/gitea.ts — added postIssueComment (author can comment on
own PR, unlike postReview which self-review-blocks).

static.ts — skip BLOCK_PATTERNS scan on auditor/checks/* and
auditor/fixtures/* because those files legitimately contain the
patterns as regex/string-literal data. WARN/INFO patterns (TODO
comments, hardcoded placeholders) still run. Live-proven: dry-run
audit of PR #1 after fix went from 13 block findings to 0 from
static; 11 warn from inference still fire on real overreach claims.

Dry-run audit against PR #1, skip_dynamic=true:
  verdict: block (BEFORE the static fix)
  verdict: request_changes (AFTER — inference correctly flagged
           "tasks 1-9 complete" as not backed; 0 false-positive
           blocks from static self-match)
  42.5s total across checks (mostly cloud inference: 36s)
  26 claims, 39KB diff

Tasks 5 + 6 + 7 + 8 complete. Remaining: #9 (poller) + #10
(end-to-end proof) + #12 (upsert UPDATE merge fix).

auditor/checks/static.ts

@@ -44,19 +44,31 @@ export function runStaticCheck(diff: string): Finding[] {
     // Skip diff bookkeeping + pure-delete files
     if (!lines.some(l => l.startsWith("+") && !l.startsWith("+++"))) continue;
 
+    // The auditor's own check files literally contain the BLOCK
+    // patterns as regex definitions (BLOCK_PATTERNS in this file,
+    // prompt examples in inference.ts). Skipping BLOCK scan on these
+    // specific paths prevents the checker from self-flagging its own
+    // string literals. WARN/INFO patterns still run — those genuinely
+    // could indicate problems in the checker's own code (TODO
+    // comments don't self-define).
+    const isAuditorCheckerFile = path.startsWith("auditor/checks/") ||
+                                 path.startsWith("auditor/fixtures/");
+
     for (let idx = 0; idx < lines.length; idx++) {
       const line = lines[idx];
       if (!line.startsWith("+") || line.startsWith("+++")) continue;
       const added = line.slice(1);
 
-      for (const { re, why } of BLOCK_PATTERNS) {
-        if (re.test(added)) {
-          findings.push({
-            check: "static",
-            severity: "block",
-            summary: `${why} in ${path}`,
-            evidence: [`${path}:+${idx + 1}: ${added.trim().slice(0, 160)}`],
-          });
+      if (!isAuditorCheckerFile) {
+        for (const { re, why } of BLOCK_PATTERNS) {
+          if (re.test(added)) {
+            findings.push({
+              check: "static",
+              severity: "block",
+              summary: `${why} in ${path}`,
+              evidence: [`${path}:+${idx + 1}: ${added.trim().slice(0, 160)}`],
+            });
+          }
         }
       }
       for (const { re, why } of WARN_COMMENT_PATTERNS) {