ci: give test:tech-log its own gate command and junit evidence

The TechLog suite already ran in CI, but only inside `test:coverage`'s combined
`vitest run tests/runtime-schema tests/unit … tests/features/tech-log`
invocation on FE-GATE-005. A TechLog regression therefore surfaced as a
coverage-gate failure, and the only junit that carried it was coverage.xml,
which reports every other suite at the same time.

`test-tech-log` now sits on FE-GATE-007 beside `test-reference-feature`, the
sibling it mirrors — both drive a suite under `tests/features/` — and declares
`artifacts/tests/tech-log.xml`, which `test:tech-log` already wrote, as its own
command-generated junit evidence. The gate log now names
`$ corepack pnpm test:tech-log` as its own step and the failure lands on the
suite that produced it.

Adding a command and an artifact moves the exact-count authority to 84
definitions / 96 references / 130 artifacts (109 evidence references), and
changes the canonical gate shape digest because FE-GATE-007's commandIds and
evidenceArtifactIds are part of it. There is no tooling to regenerate that
digest, so it was recomputed by hand under the standing procedure: a fresh
transcription of `canonicalGateShapeSha256` first reproduced the committed
f3cc9075… from the unedited config/ci/gates.json — proving the transcription,
not just agreeing with whatever the check compares against — and only then
hashed the edited file to 98d19911….

`corepack pnpm ci:gate -- FE-GATE-007` passes end to end; the generated
workflow bytes are unchanged, since the yml dispatches gates rather than
commands.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

tests/unit/ci-workflow-generation.test.ts

@@ -190,14 +190,16 @@ describe("CI gate contract", () => {
     );
     expect(contract.jobs).toHaveLength(9);
     // Final fix wave item 1: FE-GATE-010 gained `check-tech-log-contract`.
-    expect(contract.commands).toHaveLength(83);
-    expect(contract.gates.reduce((total, gate) => total + gate.commandIds.length, 0)).toBe(95);
+    // Alignment follow-up item 2: FE-GATE-007 gained `test-tech-log`.
+    expect(contract.commands).toHaveLength(84);
+    expect(contract.gates.reduce((total, gate) => total + gate.commandIds.length, 0)).toBe(96);
     expect(contract.commands.filter(({ expect }) => expect === "fail")).toHaveLength(23);
     // Template merge. Recounted from the merged config/ci/gates.json rather
     // than taking either side's number.
     // Task 11 added TECH_LOG_STUDIO_ASSETS's manual accessibility evidence.
-    expect(contract.gates.reduce((total, gate) => total + gate.evidenceArtifactIds.length, 0)).toBe(108);
-    expect(contract.artifacts).toHaveLength(129);
+    // Alignment follow-up item 2 added the TechLog junit report.
+    expect(contract.gates.reduce((total, gate) => total + gate.evidenceArtifactIds.length, 0)).toBe(109);
+    expect(contract.artifacts).toHaveLength(130);
     expect(contract.stages).toHaveLength(5);
     expect(contract.retention.classes).toHaveLength(5);
     expect(index.gates.get("FE-GATE-015")?.commandIds).toHaveLength(2);

tests/unit/task3-selective-integration.test.ts

@@ -186,10 +186,12 @@ describe("selective Task 3 contract closure", () => {
     // template's 2. Task 11 added TECH_LOG_STUDIO_ASSETS's manual
     // accessibility evidence, bringing the total to 129.
     // Final fix wave item 1 added `check-tech-log-contract` to FE-GATE-010.
+    // Alignment follow-up item 2 added `test-tech-log` and its junit report to
+    // FE-GATE-007, bringing the totals to 84/96/130.
     expect(canonical.gates).toHaveLength(27);
-    expect(canonical.commands).toHaveLength(83);
-    expect(canonical.gates.reduce((sum, gate) => sum + gate.commandIds.length, 0)).toBe(95);
-    expect(canonical.artifacts).toHaveLength(129);
+    expect(canonical.commands).toHaveLength(84);
+    expect(canonical.gates.reduce((sum, gate) => sum + gate.commandIds.length, 0)).toBe(96);
+    expect(canonical.artifacts).toHaveLength(130);
     expect(canonical.stages).toHaveLength(5);
     expect(canonical.retention.classes).toHaveLength(5);