feat(v3.12.0): media pipeline, AI image generation, capability probe, companion v2.9.0

Three-month batch sync from internal repo (~80 commits) covering Tracks F.5a, F.7e, F.8, F.17, F.18, F.X.

WordPress media pipeline
- Pillow-based optimization, AI image generation (OpenAI / Stability / Replicate / Google Nano Banana / OpenRouter), chunked + resumable uploads, bulk delete/reassign, idempotent retries.

Capability discovery (F.7e)
- Per-site credential probe + adapters for WordPress / WooCommerce / Gitea, tier-fit unions granted ∪ roles, capability badge UI with HTMX partial re-check, install hint in every companion-unreachable error.

Companion plugin overhaul
- Renamed wordpress-plugin/airano-mcp-seo-bridge → wordpress-plugin/airano-mcp-bridge.
- Eight new endpoints: /capabilities, /bulk-meta, /export, /cache-purge, /transient-flush, /site-health, /audit-hook, /upload-and-attach.
- wp.org Plugin Check pass: i18n, WP_Filesystem, scheme allowlist on audit-hook URL.

Other
- Gitea ergonomics (F.17): batch files, tree, search, compare, releases, fork.
- Opportunistic bcrypt upgrade for legacy SHA-256 admin keys (F.8).
- n8n refactor: structured errors, capability probe, missing tools backfilled.
- Idempotency-Key dedup for AI media upload retries; WP client fast-fails on unreachable sites.

Docs
- README + CLAUDE.md drop the fixed "633 tools" claim. The total grows with each release; per-plugin approximations + dashboard-surfaced counts replace it.
- Tools/Tests badges removed in favour of "Plugins: 10".

Deployment
- PyPI mirror chain, optional BUILD_HTTP_PROXY, Alpine→Yandex apk mirror, Debian-slim Plan-B Dockerfile, mirror.gcr.io variant.

CI
- Black + Ruff clean on Python 3.12; pytest tests/ green.

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

tests/plugins/wordpress/test_cache_purge.py

@@ -0,0 +1,128 @@
+"""F.18.4 — Tests for wordpress_cache_purge."""
+
+from __future__ import annotations
+
+import json
+from unittest.mock import AsyncMock
+
+import pytest
+
+from plugins.wordpress.client import WordPressClient
+from plugins.wordpress.handlers.cache_purge import (
+    CachePurgeHandler,
+    get_tool_specifications,
+)
+
+
+@pytest.fixture
+def wp_client():
+    return WordPressClient(site_url="https://wp.example.com", username="u", app_password="p")
+
+
+@pytest.fixture
+def handler(wp_client):
+    return CachePurgeHandler(wp_client)
+
+
+@pytest.mark.asyncio
+async def test_happy_path(handler, wp_client, monkeypatch):
+    companion_response = {
+        "detected": ["wp_rocket", "litespeed"],
+        "purged": ["wp_rocket_all", "litespeed_all", "object_cache"],
+        "skipped": [],
+        "errors": [],
+        "ok": True,
+        "plugin_version": "2.4.0",
+    }
+    post_mock = AsyncMock(return_value=companion_response)
+    monkeypatch.setattr(wp_client, "post", post_mock)
+
+    out = json.loads(await handler.cache_purge())
+    assert out["ok"] is True
+    assert out["detected"] == ["wp_rocket", "litespeed"]
+    assert "object_cache" in out["purged"]
+    assert out["plugin_version"] == "2.4.0"
+
+    post_mock.assert_called_once_with(
+        "airano-mcp/v1/cache-purge",
+        json_data={},
+        use_custom_namespace=True,
+    )
+
+
+@pytest.mark.asyncio
+async def test_no_cache_plugins_detected(handler, wp_client, monkeypatch):
+    companion_response = {
+        "detected": [],
+        "purged": ["object_cache"],
+        "skipped": [],
+        "errors": [],
+        "ok": True,
+        "plugin_version": "2.4.0",
+    }
+    monkeypatch.setattr(wp_client, "post", AsyncMock(return_value=companion_response))
+
+    out = json.loads(await handler.cache_purge())
+    assert out["ok"] is True
+    assert out["detected"] == []
+    # Object cache still flushed unconditionally.
+    assert "object_cache" in out["purged"]
+
+
+@pytest.mark.asyncio
+async def test_partial_errors_propagated(handler, wp_client, monkeypatch):
+    companion_response = {
+        "detected": ["wp_rocket"],
+        "purged": ["object_cache"],
+        "skipped": [],
+        "errors": [{"plugin": "wp_rocket", "message": "rocket_clean_domain exploded"}],
+        "ok": False,
+        "plugin_version": "2.4.0",
+    }
+    monkeypatch.setattr(wp_client, "post", AsyncMock(return_value=companion_response))
+
+    out = json.loads(await handler.cache_purge())
+    assert out["ok"] is False
+    assert len(out["errors"]) == 1
+    assert out["errors"][0]["plugin"] == "wp_rocket"
+
+
+@pytest.mark.asyncio
+async def test_companion_unreachable(handler, wp_client, monkeypatch):
+    monkeypatch.setattr(wp_client, "post", AsyncMock(side_effect=RuntimeError("404 Not Found")))
+
+    out = json.loads(await handler.cache_purge())
+    assert out["ok"] is False
+    assert out["error"] == "companion_unreachable"
+    assert "manage_options" in out["hint"]
+
+
+@pytest.mark.asyncio
+async def test_non_dict_response(handler, wp_client, monkeypatch):
+    monkeypatch.setattr(wp_client, "post", AsyncMock(return_value="not a dict"))
+
+    out = json.loads(await handler.cache_purge())
+    assert out["ok"] is False
+    assert out["error"] == "invalid_response"
+
+
+@pytest.mark.asyncio
+async def test_ok_inferred_from_empty_errors_if_missing(handler, wp_client, monkeypatch):
+    """Older companion builds might not emit an `ok` flag; derive from errors list."""
+    companion_response = {
+        "detected": ["w3_total_cache"],
+        "purged": ["w3_total_cache_all", "object_cache"],
+        "errors": [],
+        "plugin_version": "2.4.0",
+    }
+    monkeypatch.setattr(wp_client, "post", AsyncMock(return_value=companion_response))
+
+    out = json.loads(await handler.cache_purge())
+    assert out["ok"] is True
+
+
+def test_tool_spec_is_admin_scope():
+    specs = get_tool_specifications()
+    assert len(specs) == 1
+    assert specs[0]["name"] == "cache_purge"
+    assert specs[0]["scope"] == "admin"