v3.11.6: Antigravity loop breakers, vision/OCR preprocessing, has_content fix, auth config error fix, install.ps1

CHANGELOG.md

@@ -1,5 +1,37 @@
 # Changelog
 
+## v3.11.6 (2026-05-26)
+
+**Antigravity Loop Breakers, Vision/OCR Preprocessing, has_content Fix, Auth Error Fix**
+
+### New Features (Antigravity-only, no other providers affected)
+
+- **Per-session loop tracking**: `_ANTIGRAVITY_LOOP_TRACKER` global dict with `_antigravity_loop_key()` function tracks state per session: `latest_user_hash`, `nudge_injected`, `latest_user_appended`, `tool_calls_for_request`, `repeated_tool`, `force_finalize`, `last_tool`, `last_tool_count`
+- **Edit-intent nudge injection**: Injected only on the first turn per request, preventing duplicate nudges across retries
+- **Latest user instruction append**: Appended exactly once per request to prevent redundant instruction stacking
+- **Loop breaker**: If the same tool + arguments is repeated ≥ 5 times in a session, `force_finalize` is triggered to break the infinite loop
+- **Detailed `[antigravity-loop]` logging**: All tracking fields logged on every Antigravity request for debugging
+
+### New Features (All OpenAI-compatible providers)
+
+- **Vision/OCR preprocessing**: When a provider doesn't support images (detected via error messages like "unknown variant image_url", "does not support image"), the proxy automatically calls a configurable vision fallback API (default: Kilo.ai) to describe images as text, then replaces image blocks with text descriptions before sending to text-only models
+- **`_vision_describe_image()`**: Calls vision fallback model to describe a single image, with MD5-based caching to avoid re-describing same URL
+- **`_preprocess_vision()`**: Replaces `image_url`/`input_image` blocks in Chat Completions message format with text descriptions when provider lacks vision support
+- **`_preprocess_vision_input()`**: Same for Responses API input format — runs BEFORE adapter conversion so images are replaced early
+- **Vision error retry**: On HTTP 4xx errors containing image-related keywords, automatically retries with images preprocessed instead of failing
+- **Configurable via env vars**: `VISION_FALLBACK_URL`, `VISION_FALLBACK_MODEL`, `VISION_FALLBACK_KEY`
+- **ProviderSchema `supports_vision` field**: Auto-detected from error responses and persisted in provider-caps.json
+
+### Critical Fixes
+
+- **`has_content` now includes `function_call`** (v3.11.5 fix): `_observe_event` only checked for `"type": "message"` — when models return only tool calls (no text), `has_content` was `False`, causing Codex to loop infinitely and build context until `context_length_exceeded`. Now checks both `"message"` and `"function_call"`.
+- **`has_message`/`has_tool_call` initialized in all 5 locations**: Previous fix added variables inside `_observe_event` closure but missed 4 other `has_content = False` locations, causing `NameError: name 'has_message' is not defined` crashes.
+- **Auth config-not-found error handling**: When Codex's `config.toml` is missing or deleted, `codex login status` returns "Error loading configuration: No such file or directory (os error 2)". Now caught specifically (`OSError errno==2`) and returns ("not_configured", "Config missing — launch once to create") with clear GUI guidance.
+
+### Bug Fixes (GUI)
+
+- **Active endpoint sync**: GUI auto-removes stale endpoint references on startup
+
 ## v3.11.5 (2026-05-26)
 
 **Vision Filter, Token-Aware Compaction, Universal Adaptive Compaction, Smart-Continue Text Detection**