Changes:
- feat(agent): rewrite opencode integration on HTTP-server transport
- feat(agent): probe command routing, provider metadata injection, and handshake capabilities
- feat(agent): OpenCodeProvider support with provider-agnostic settings
- feat(pwa): HTTP-style conditional cache + refresh button for file viewer
- fix(pwa): two snapshot-loss bugs on new opencode session create
- fix(pwa): plan, question, and todo cards always visible regardless of tool group collapse
- fix(pwa): reset session state on ClaudePanel unmount
- fix(pwa): close AgentId record gaps introduced by new opencode/pi ids
- fix(pwa): permission response routing + reconnect reliability
- fix(agent): bypass mode no longer skips AskUserQuestion, ExitPlanMode, ExitWorktree
- fix(agent): drive set_model mid-session for Claude CLI
- fix(agent): finish probeProvider rollout so HEAD typechecks again
- refactor(pwa): scope session ops to route-specific agent bus
- chore: sync pnpm-lock.yaml with package.json