refactor(#190): collapse SDK sync bridge and remove synckit seam

docs/INVENTORY-MANIFEST.json

@@ -265,7 +265,6 @@
       "artifacts.cjs",
       "audit.cjs",
       "cjs-command-router-adapter.cjs",
-      "cjs-sdk-bridge.cjs",
       "clusters.cjs",
       "code-review-flags.cjs",
       "command-aliases.cjs",

docs/INVENTORY.md

@@ -362,7 +362,7 @@ The `gsd-planner` agent is decomposed into a core agent plus reference modules t
 
 ---
 
-## CLI Modules (72 shipped)
+## CLI Modules (71 shipped)
 
 Full listing: `get-shit-done/bin/lib/*.cjs`.
 
@@ -373,7 +373,6 @@ Full listing: `get-shit-done/bin/lib/*.cjs`.
 | `artifacts.cjs` | Canonical artifact registry — known `.planning/` root file names; used by `gsd-health` W019 lint |
 | `audit.cjs` | Audit dispatch, audit open sessions, audit storage helpers |
 | `cjs-command-router-adapter.cjs` | Shared compatibility adapter for manifest-backed CJS command-family routers |
-| `cjs-sdk-bridge.cjs` | Shared SDK runtime-bridge loader (`tryLoadSdk`/`getExecuteForCjs`); consumed by every CJS router and `gsd-tools.cjs` to delegate canonical commands to the SDK in-process |
 | `clusters.cjs` | Skill cluster definitions for the runtime surface module (ADR-0011 Phase 2) |
 | `code-review-flags.cjs` | Typed flag parser for `/gsd:code-review`; exports `parseCodeReviewFlags(argv)` (→ `{ fix, all, auto, depth, files }`) and `resolveCodeReviewWorkflow(flags)` (→ `'code-review.md' \| 'code-review-fix.md'`); canonical dispatch seam for `--fix`/`--all`/`--auto` routing |
 | `command-aliases.cjs` | Alias/subcommand metadata for manifest-backed family routers |