feat: add DeepSeek Harness support (#6874)

* feat(daemon): scaffold DeepSeek Harness profile protocol

* feat(daemon): integrate DeepSeek Harness profile runtime

* fix(daemon): preserve headless prompts on native resume

* refactor(daemon): model Harness profile resume explicitly

* fix(daemon): resume Harness sessions after cancel

* test(daemon): verify DeepSeek Harness Windows carrier

* test(daemon): reap DeepSeek Harness Windows process tree

* feat(agents): surface DeepSeek Harness models and branding

* fix(daemon): surface Harness credential guidance

* feat: add bundled DeepSeek Harness setup

* fix: link DeepSeek Harness installer

* fix: link official Harness docs

* fix(daemon): distinguish Harness companion install

* test(pack): verify bundled Harness resources on Windows

* fix: harden Harness profile turn lifecycle

Generated-By: looper 0.11.2 (runner=fixer, agent=codex)

* fix(dsh-runtime): stop cancelled restore follow-ups

Generated-By: looper 0.11.2 (runner=fixer, agent=codex)

* fix(daemon): cancel Harness startup before execute

Generated-By: looper 0.11.2 (runner=fixer, agent=codex)

* fix(pack): build DeepSeek runtime on cold cache

---------

Co-authored-by: lefarcen <935902669@qq.com>
Co-authored-by: Looper <looper@noreply.github.com>

scripts/postinstall.mjs

@@ -22,6 +22,7 @@ const buildTargets = [
   "packages/launcher-proto",
   "packages/sidecar",
   "packages/diagnostics",
+  "packages/dsh-runtime",
   "apps/daemon",
   "tools/dev",
   "tools/pack",