v1.60.2.0 fix: free-suite drift on dev machines (eval-list cwd, gemini regex, observability floor) (#2470)

* fix(test): eval-list CLI spawns from neutral cwd so slug detection can't dodge the fixture store

getProjectEvalDir() probes cwd-relative .claude/skills/gstack/bin/gstack-slug;
with cwd=ROOT on a dev machine the self-symlink makes it succeed, routing reads
to an empty project-scoped dir instead of the seeded legacy ~/.gstack-dev/evals.
Neutral cwd + absolute script path fails both probes deterministically — same
behavior as CI.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(test): case-insensitive remediation-hint match for reworded Gemini NOT-READY message

The message now leads with 'Export GEMINI_API_KEY...' (free-tier OAuth
deprecation); the old pattern only knew lowercase 'export'.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(test): observability check 11 floor 6 -> 5 after shell-free spawn removed promptFile unlink

aa3bd6f0 deleted the prompt temp file (and its /* non-fatal */ marker) when it
dropped shell interpolation. The invariant — every runner I/O path wrapped
non-fatally — still holds at the 5 remaining sites, now named in the comment.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* docs(todos): P1 — free-suite exit code masked by in-process force-exits

Five browse test files setTimeout(() => process.exit(0), 500) inside the shared
bun process; the suite can exit 0 before the summary with real failures masked.
Receipts + fix path filed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* chore(release): v1.60.2.0

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

test/benchmark-cli.test.ts

@@ -133,7 +133,7 @@ describe('gstack-model-benchmark --dry-run', () => {
       const notReadyLines = out.split('\n').filter(l => l.includes('NOT READY'));
       expect(notReadyLines.length).toBeGreaterThanOrEqual(2);
       for (const line of notReadyLines) {
-        expect(line).toMatch(/(install|Install|login|export|Run|Log in)/);
+        expect(line).toMatch(/(install|login|export|run|log in)/i);
       }
     } finally {
       fs.rmSync(emptyHome, { recursive: true, force: true });