feat: add desktop document search and verified native CPU embeddings

README.md

@@ -7,8 +7,9 @@ production readiness is tracked in [the roadmap](docs/ROADMAP.md).
 
 `crates/searchi-core` owns persistent indexing and retrieval. `crates/searchi-cli`
 provides a headless interface. `apps/desktop` hosts the Tauri desktop app.
-The initial implementation provides lexical search; semantic and media search
-are explicit upcoming milestones, not simulated features.
+The initial implementation provides lexical search over filenames, bounded text,
+PDF pages and DOCX paragraphs. Semantic and media search are explicit upcoming
+milestones; a genuine CPU model proof is included separately.
 
 All testing in the Windows development VM uses CPU only. Indexed content stays
 local. Treat the index as sensitive: it contains extracted document text.
@@ -25,6 +26,7 @@ cargo run -p searchi-cli -- --help
 ```
 
 Desktop development instructions live in `apps/desktop/README.md`.
+Platform and CI details live in [the build guide](docs/BUILDING.md).
 Native CI builds must pass on all supported systems before release. Cross-platform
 source support does not imply signed macOS installers can be built on Windows.