chore(workspace): install all 4 bundled hooks + model default update

- Installed hooks: boot-md, session-memory, command-logger, bootstrap-extra-files
- Updated default model to litellm/copilot-claude-sonnet-4.6
- Added memory/startup-health.json + boot-last-run.json from boot check
- Added memory/startup-health.md warning log
- Captured new session memory files (2026-03-04/05)
- Minor MEMORY.md + USER.md: added git preference line

memory/2026-03-03-session-greeting.md

@@ -0,0 +1,13 @@
+# Session: 2026-03-03 06:10:16 UTC
+
+- **Session Key**: agent:main:telegram:direct:8367012007
+- **Session ID**: 250fda7d-c6d5-43d0-abbc-cbe63bdf9250
+- **Source**: telegram
+
+## Conversation Summary
+
+assistant: ✅ New session started · model: openai/gpt-5.2 (default: openai-codex/gpt-5.3-codex)
+user: System: [2026-03-03 06:09:35 UTC] Compaction failed: No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.3-codex (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.1-codex. • Context 15k/272k (5%)
+
+A new session was started via /new or /reset. Execute your Session Startup sequence now - read the required files before responding to the user. Then greet the user in your configured persona, if one is provided. Be yourself - use your defined voice, mannerisms, and mood. Keep it to 1-3 sentences and ask what they want to do. If the runtime model differs from default_model in the system prompt, mention the default model. Do not mention internal steps, files, tools, or reasoning.
+assistant: [[reply_to_current]] Hey Will — zap ⚡ here and ready to roll. What do you want to tackle first?