chore: release v0.15.0 (2026.5.28) (#34008)

* chore: release v0.15.0 (2026.5.28)

The Velocity Release. Run_agent.py refactor (16k→3.8k LOC, -76%),
kanban grows into a multi-agent platform (104 PRs), cold-start perf wave
continues (-240ms / -47% per-turn function calls / -195ms per tool call),
session_search rebuilt (4500x faster, no LLM), promptware defense lands,
Bitwarden Secrets Manager integration, two new image_gen providers
(Krea 2, FAL plugin port), Nous-approved MCP catalog, OpenHands skill,
ntfy as 23rd messaging platform, deep xAI integration round.
15 P0 + 65 P1 closures. 747 PRs, 1,302 commits, 321 contributors.

* chore(release): bump acp_registry/agent.json to 0.15.0 (sync with pyproject)

scripts/contributor_audit.py

@@ -42,6 +42,7 @@ IGNORED_PATTERNS = [
     re.compile(r"^Copilot$", re.IGNORECASE),
     re.compile(r"^Cursor(\s+Agent)?$", re.IGNORECASE),
     re.compile(r"^GitHub\s*Actions?$", re.IGNORECASE),
+    re.compile(r"^github-actions(\[bot\])?$", re.IGNORECASE),
     re.compile(r"^dependabot", re.IGNORECASE),
     re.compile(r"^renovate", re.IGNORECASE),
     re.compile(r"^Hermes\s+(Agent|Audit)$", re.IGNORECASE),
@@ -51,10 +52,12 @@ IGNORED_PATTERNS = [
 IGNORED_EMAILS = {
     "noreply@anthropic.com",
     "noreply@github.com",
+    "noreply@nousresearch.com",
     "cursoragent@cursor.com",
     "hermes@nousresearch.com",
     "hermes-audit@example.com",
     "hermes@habibilabs.dev",
+    "omx@oh-my-codex.dev",
 }