Add DocGen tool with comprehensive documentation generation capabilities (#109)

* WIP: new workflow architecture

* WIP: further improvements and cleanup

* WIP: cleanup and docks, replace old tool with new

* WIP: cleanup and docks, replace old tool with new

* WIP: new planner implementation using workflow

* WIP: precommit tool working as a workflow instead of a basic tool
Support for passing False to use_assistant_model to skip external models completely and use Claude only

* WIP: precommit workflow version swapped with old

* WIP: codereview

* WIP: replaced codereview

* WIP: replaced codereview

* WIP: replaced refactor

* WIP: workflow for thinkdeep

* WIP: ensure files get embedded correctly

* WIP: thinkdeep replaced with workflow version

* WIP: improved messaging when an external model's response is received

* WIP: analyze tool swapped

* WIP: updated tests
* Extract only the content when building history
* Use "relevant_files" for workflow tools only

* WIP: updated tests
* Extract only the content when building history
* Use "relevant_files" for workflow tools only

* WIP: fixed get_completion_next_steps_message missing param

* Fixed tests
Request for files consistently

* Fixed tests
Request for files consistently

* Fixed tests

* New testgen workflow tool
Updated docs

* Swap testgen workflow

* Fix CI test failures by excluding API-dependent tests

- Update GitHub Actions workflow to exclude simulation tests that require API keys
- Fix collaboration tests to properly mock workflow tool expert analysis calls
- Update test assertions to handle new workflow tool response format
- Ensure unit tests run without external API dependencies in CI

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* WIP - Update tests to match new tools

* WIP - Update tests to match new tools

* WIP - Update tests to match new tools

* Should help with https://github.com/BeehiveInnovations/zen-mcp-server/issues/97
Clear python cache when running script: https://github.com/BeehiveInnovations/zen-mcp-server/issues/96
Improved retry error logging
Cleanup

* WIP - chat tool using new architecture and improved code sharing

* Removed todo

* Removed todo

* Cleanup old name

* Tweak wordings

* Tweak wordings
Migrate old tests

* Support for Flash 2.0 and Flash Lite 2.0

* Support for Flash 2.0 and Flash Lite 2.0

* Support for Flash 2.0 and Flash Lite 2.0
Fixed test

* Improved consensus to use the workflow base class

* Improved consensus to use the workflow base class

* Allow images

* Allow images

* Replaced old consensus tool

* Cleanup tests

* Tests for prompt size

* New tool: docgen
Tests for prompt size
Fixes: https://github.com/BeehiveInnovations/zen-mcp-server/issues/107
Use available token size limits: https://github.com/BeehiveInnovations/zen-mcp-server/issues/105

* Improved docgen prompt
Exclude TestGen from pytest inclusion

* Updated errors

* Lint

* DocGen instructed not to fix bugs, surface them and stick to d

* WIP

* Stop claude from being lazy and only documenting a small handful

* More style rules

---------

Co-authored-by: Claude <noreply@anthropic.com>

providers/gemini.py

@@ -19,6 +19,22 @@ class GeminiModelProvider(ModelProvider):
 
     # Model configurations
     SUPPORTED_MODELS = {
+        "gemini-2.0-flash": {
+            "context_window": 1_048_576,  # 1M tokens
+            "supports_extended_thinking": True,  # Experimental thinking mode
+            "max_thinking_tokens": 24576,  # Same as 2.5 flash for consistency
+            "supports_images": True,  # Vision capability
+            "max_image_size_mb": 20.0,  # Conservative 20MB limit for reliability
+            "description": "Gemini 2.0 Flash (1M context) - Latest fast model with experimental thinking, supports audio/video input",
+        },
+        "gemini-2.0-flash-lite": {
+            "context_window": 1_048_576,  # 1M tokens
+            "supports_extended_thinking": False,  # Not supported per user request
+            "max_thinking_tokens": 0,  # No thinking support
+            "supports_images": False,  # Does not support images
+            "max_image_size_mb": 0.0,  # No image support
+            "description": "Gemini 2.0 Flash Lite (1M context) - Lightweight fast model, text-only",
+        },
         "gemini-2.5-flash": {
             "context_window": 1_048_576,  # 1M tokens
             "supports_extended_thinking": True,
@@ -37,6 +53,10 @@ class GeminiModelProvider(ModelProvider):
         },
         # Shorthands
         "flash": "gemini-2.5-flash",
+        "flash-2.0": "gemini-2.0-flash",
+        "flash2": "gemini-2.0-flash",
+        "flashlite": "gemini-2.0-flash-lite",
+        "flash-lite": "gemini-2.0-flash-lite",
         "pro": "gemini-2.5-pro",
     }