Cli 9 create a new plugin called code renderer - #3

New csvview command

new blockstore

The main README.md was inadvertently removed when the tmux cherry-pick (wavetermdev#3)
conflicted on it during the SSH backport. Replace it with a fork-focused README:
what this fork adds (UI theme picker, named tab flags, SSH backport, light-mode
polish), install/build instructions, and the branch model.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

Work through docs/open-issues.md; wavetermdev#5 deferred (documented blocker).

wavetermdev#1 gitattributes merge=union for the three generated wshrpc client files
   (wshclient.go, wshclientapi.ts, gotypes.d.ts); tsgen guards backstop a bad union.

wavetermdev#2 split two agent-view god-files (move-only, call sites unchanged):
   - runbody.tsx 881->561: card family -> runcards.tsx, plan editor -> planpreview.tsx
   - agentsviewmodel.ts 1030->895: grid geometry -> cardgridlayout.ts (+ tests),
     re-exported so importers are untouched.

wavetermdev#3 (3a) transcript-stream per-card unmount watcher leak:
   - server cancelRequest now cancels the request context (not just the bool), so a
     streaming handler's goroutine + fsnotify watcher unwind while the link is up.
   - client emits the wire cancel synchronously from an overridden return() in
     sendRpcCommand -- gen.return() hangs and never runs finally when the generator is
     parked at the never-settling await (a quiet stream), so a finally-based cancel
     would be missed. Guarded by go -race + client vitest.
   - 3b (stateful projection) intentionally not built (measure-first).

wavetermdev#4 channel-attachment temp-file cleanup: WriteTempFileCommand now uses a distinct
   waveterm-attach- prefix (the bare waveterm- sweep could delete /tmp/waveterm-<uid>
   socket dirs on Linux/macOS); SweepTempAttachments reaps dirs >24h, wired into
   wavesrv startup + a 4h loop.