claude-code as channel model, container trust/permissions fixes, terminal cwd fix

- add claude-code as virtual model in channel messaging (telegram/discord/whatsapp)
- new send-claude-code.ts: docker exec claude -p with session resumption
- route claude-code model in sendAndAwait before Pi pipeline
- append claude-code to listPiModels output
- fix container .claude mount (rw for sub-mounts), hooks format (matcher-based)
- pre-seed hasTrustDialogAccepted and bypassPermissions in container settings
- git init in entrypoint to skip workspace trust prompt
- fix ~/~ double-tilde in CommandTerminalWrapper cwd resolution
- remove --continue from claude-code panel command

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/servers/api/terminal/Dockerfile.terminal-sidecar

@@ -63,7 +63,7 @@ RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --de
 
 ENV PATH="/usr/local/cargo/bin:${PATH}"
 
-RUN npm install -g @mariozechner/pi-coding-agent
+RUN npm install -g @mariozechner/pi-coding-agent @anthropic-ai/claude-code
 
 WORKDIR /tmp