fix(ci): pin setup-uv version to bypass anon GitHub API rate limit

Both Tests/test and Tests/e2e jobs were failing with:

  No (valid) GitHub token provided. Falling back to anonymous.
  ::error::API rate limit exceeded for 5.78.80.188.
  ❌  Failure - Main Install uv

Root cause: astral-sh/setup-uv@v5 with no `version:` resolves "latest"
by calling api.github.com (octokit.repos.getLatestRelease). The
operator host's anonymous IP is rate-limited at the public 60-req/hr
cap because we no longer have a Molecule-AI GitHub PAT post the
2026-05-06 org suspension. Multiple uv installs across 16 runners
exhaust the budget within minutes; subsequent installs fail.

Pinning `version: "0.11.11"` makes setup-uv construct the release
download URL directly (github.com/astral-sh/uv/releases/download/0.11.11)
without an API call. Anonymous GitHub releases CDN downloads are not
rate-limited.

Same pattern as the prior molecule-core fix during the 2026-05-08
hermes-agent CI investigation; this one pins the tests.yml workflow
that the prior fix missed.

Drops the .ci-trigger-marker introduced earlier in this session — its
job is done.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/.ci-trigger-marker

@@ -1,6 +0,0 @@
-# CI re-trigger marker
-# Touched 2026-05-08 to fire Tests + Nix workflows after operator host
-# disk pressure relief (99% → 79%). Last run had ENOSPC errors that
-# masked which test failures are real vs env-induced.
-#
-# Safe to delete after confirming a clean run.

.github/workflows/tests.yml

@@ -32,7 +32,17 @@ jobs:
         run: sudo apt-get update && sudo apt-get install -y ripgrep
 
       - name: Install uv
+        # Pin uv version explicitly so setup-uv constructs the release
+        # download URL directly instead of resolving "latest" via the
+        # GitHub REST API. The operator host's anon IP (5.78.80.188)
+        # is anonymous-rate-limited at GitHub post-2026-05-06 (no org
+        # PAT available — see internal#79). Without the pin, the
+        # action's `octokit.repos.getLatestRelease()` call hits the
+        # 60-req/hr cap and fails Install uv with "API rate limit
+        # exceeded". With a pin, no API call is needed.
         uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86  # v5
+        with:
+          version: "0.11.11"
 
       - name: Set up Python 3.11
         run: uv python install 3.11
@@ -61,7 +71,17 @@ jobs:
         uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
 
       - name: Install uv
+        # Pin uv version explicitly so setup-uv constructs the release
+        # download URL directly instead of resolving "latest" via the
+        # GitHub REST API. The operator host's anon IP (5.78.80.188)
+        # is anonymous-rate-limited at GitHub post-2026-05-06 (no org
+        # PAT available — see internal#79). Without the pin, the
+        # action's `octokit.repos.getLatestRelease()` call hits the
+        # 60-req/hr cap and fails Install uv with "API rate limit
+        # exceeded". With a pin, no API call is needed.
         uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86  # v5
+        with:
+          version: "0.11.11"
 
       - name: Set up Python 3.11
         run: uv python install 3.11