Use measured query-only context across desktop CLI and MCP

docs/ROADMAP.md

@@ -178,6 +178,13 @@ Audit and measured priorities: [EMBEDDINGGEMMA2-AUDIT.md](EMBEDDINGGEMMA2-AUDIT.
   - [ ] Measure representative mixed-media contention, single-thread latency,
     extraction/decoder/ANN work and native UI p95 before closing this gate.
 - [ ] Attribute startup cost; measure smaller query context and selective encoders.
+  - [x] Query-only 512-token context in the normal worker, desktop/CLI/MCP
+    integration and actual Windows CPU parity/boundary/reference tests.
+    Paired samples reduced private commitment by 183 MB; resident memory and
+    cached startup were essentially unchanged. See [QUERY-CONTEXT.md](QUERY-CONTEXT.md).
+  - [ ] Verify native Linux/macOS, GPU parity and updated installed packages.
+  - [ ] Evaluate text readiness before the larger media projector finishes
+    downloading; preserve verified assets and honest media setup status.
 - [ ] Buffered bounded media IPC and linear UTF-8 source-window offset processing.
 - [ ] Evaluate 256d MRL and content-specific vision budgets on independent data.
 - [ ] Validate GPU precision, synchronization-aware timings, parity and fallback