is_generation_query() only checked the current user input, so short
follow-up messages like "sure go ahead fix all then" didn't match any
keyword and caused the agent to be built without WriteFileTool,
WriteFilesTool, and ShellTool. The model then tried to call those tools
(they were in conversation history) and got ToolNotFoundError.

Two fixes:
1. Add commonly missing generation verbs to is_generation_query:
   fix, update, add, change, modify, edit, configure, setup, patch,
   install - these clearly imply file modification intent.

2. Track last_was_generation in ChatSession. For short inputs (< 60
   chars) that aren't planning mode, inherit generation mode from the
   previous turn so confirmations like "sure", "yes", "go ahead" keep
   write/shell tools active.

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

The agent created a hallucinated project_id when deploying for the syncable platform.
Instead of relying context, the project_id is now ALWAYS derrived directly from the session, where users attach them selves to a project.

Bug/stale project id parsing