Preserve explicit code candidates and expose verified model asset milestones

crates/searchi-assets/src/lib.rs

@@ -17,6 +17,31 @@ use std::{
 /// Exact bytes of the pinned text model plus its multimedia projection.
 pub const TOTAL_BYTES: u64 = 864_676_480;
 const ATTEMPTS: usize = 3;
+const BACKBONE_FILE: &str = "embeddinggemma-2-Q8_0.gguf";
+const PROJECTOR_FILE: &str = "mmproj-embeddinggemma-2-Q8_0.gguf";
+
+/// One verified pinned artifact. This does not imply the full bundle or an
+/// inference session is ready; a later artifact can still fail provisioning.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum VerifiedAsset {
+    TextBackbone,
+    MediaProjector,
+}
+
+fn verified_asset(artifact: &Artifact) -> Option<VerifiedAsset> {
+    match artifact.path.as_str() {
+        BACKBONE_FILE => Some(VerifiedAsset::TextBackbone),
+        PROJECTOR_FILE => Some(VerifiedAsset::MediaProjector),
+        _ => None, // Private HTTP fixtures may use arbitrary artifact names.
+    }
+}
+
+fn validate_artifact_order(files: &[Artifact]) -> Result<()> {
+    if files.len() != 2 || files[0].path != BACKBONE_FILE || files[1].path != PROJECTOR_FILE {
+        bail!("bundled model manifest must provision the text backbone before the media projector");
+    }
+    Ok(())
+}
 
 #[derive(Deserialize)]
 struct Manifest {
@@ -66,6 +91,7 @@ fn manifest() -> Result<Manifest> {
     if manifest.files[0].path == manifest.files[1].path {
         bail!("duplicate model manifest artifact");
     }
+    validate_artifact_order(&manifest.files)?;
     Ok(manifest)
 }
 
@@ -158,28 +184,60 @@ fn verified(path: &Path, artifact: &Artifact) -> Result<bool> {
 /// is completed verified bytes plus bytes of the current attempt. On failure it
 /// resets to verified completed bytes; cached files never trigger network access.
 pub fn provision(directory: &Path, progress: &AtomicU64) -> Result<()> {
+    provision_with_verified_assets(directory, progress, |_| {})
+}
+
+/// Provision the complete pinned pair, notifying after each artifact's exact
+/// cached SHA verification or successful verified atomic installation. The
+/// callback is synchronous and has no error return: callers must keep their
+/// inference/setup errors separate from download errors. Byte progress alone
+/// never triggers a notification. Success still requires both artifacts.
+pub fn provision_with_verified_assets(
+    directory: &Path,
+    progress: &AtomicU64,
+    on_verified: impl FnMut(VerifiedAsset),
+) -> Result<()> {
     let manifest = manifest()?;
     let client = Client::builder()
         .connect_timeout(Duration::from_secs(20))
         .timeout(Duration::from_secs(900))
         .user_agent(concat!("Searchi/", env!("CARGO_PKG_VERSION")))
         .build()?;
-    provision_with(directory, progress, &manifest, &client, |artifact| {
-        format!(
-            "https://huggingface.co/{}/resolve/{}/{}",
-            manifest.export_repository, manifest.revision, artifact.path
-        )
-    })
+    provision_with_callback(
+        directory,
+        progress,
+        &manifest,
+        &client,
+        |artifact| {
+            format!(
+                "https://huggingface.co/{}/resolve/{}/{}",
+                manifest.export_repository, manifest.revision, artifact.path
+            )
+        },
+        on_verified,
+    )
 }
 
 // URL injection is private so tests can use a local HTTP fixture. Production
 // exposes no arbitrary download source or unverified executable provisioner.
+#[cfg(test)]
 fn provision_with(
     directory: &Path,
     progress: &AtomicU64,
     manifest: &Manifest,
     client: &Client,
     url: impl Fn(&Artifact) -> String,
+) -> Result<()> {
+    provision_with_callback(directory, progress, manifest, client, url, |_| {})
+}
+
+fn provision_with_callback(
+    directory: &Path,
+    progress: &AtomicU64,
+    manifest: &Manifest,
+    client: &Client,
+    url: impl Fn(&Artifact) -> String,
+    mut on_verified: impl FnMut(VerifiedAsset),
 ) -> Result<()> {
     fs::create_dir_all(directory).context("create model cache directory")?;
     progress.store(0, Ordering::Release);
@@ -190,6 +248,9 @@ fn provision_with(
         if verified(&destination, artifact)? {
             completed += artifact.bytes;
             progress.store(completed, Ordering::Release);
+            if let Some(asset) = verified_asset(artifact) {
+                on_verified(asset);
+            }
             continue;
         }
         let mut last_error = None;
@@ -225,6 +286,9 @@ fn provision_with(
         }
         completed += artifact.bytes;
         progress.store(completed, Ordering::Release);
+        if let Some(asset) = verified_asset(artifact) {
+            on_verified(asset);
+        }
     }
     Ok(())
 }
@@ -564,4 +628,238 @@ mod tests {
             .unwrap()
             .ends_with("models/embeddinggemma2"));
     }
+    #[test]
+    fn pinned_backbone_must_precede_projector() {
+        let mut files = manifest().unwrap().files;
+        validate_artifact_order(&files).unwrap();
+        files.swap(0, 1);
+        assert!(validate_artifact_order(&files).is_err());
+    }
+
+    #[test]
+    fn cached_pair_emits_verified_callbacks_without_network() {
+        let directory = tempfile::tempdir().unwrap();
+        let manifest = test_manifest(vec![
+            artifact(BACKBONE_FILE, b"backbone"),
+            artifact(PROJECTOR_FILE, b"projection"),
+        ]);
+        fs::write(directory.path().join(BACKBONE_FILE), b"backbone").unwrap();
+        fs::write(directory.path().join(PROJECTOR_FILE), b"projection").unwrap();
+        let progress = AtomicU64::new(0);
+        let mut observed = Vec::new();
+        provision_with_callback(
+            directory.path(),
+            &progress,
+            &manifest,
+            &client(),
+            |_| panic!("Cached pair attempted network"),
+            |asset| {
+                observed.push(asset);
+                let bytes = match asset {
+                    VerifiedAsset::TextBackbone => 8,
+                    VerifiedAsset::MediaProjector => 18,
+                };
+                assert_eq!(progress.load(Ordering::Acquire), bytes);
+            },
+        )
+        .unwrap();
+        assert_eq!(
+            observed,
+            [VerifiedAsset::TextBackbone, VerifiedAsset::MediaProjector]
+        );
+        assert_eq!(progress.load(Ordering::Acquire), 18);
+    }
+
+    #[test]
+    fn failed_projector_retains_verified_text_callback_and_progress() {
+        let directory = tempfile::tempdir().unwrap();
+        fs::write(directory.path().join(PROJECTOR_FILE), b"oldproject").unwrap();
+        let manifest = test_manifest(vec![
+            artifact(BACKBONE_FILE, b"backbone"),
+            artifact(PROJECTOR_FILE, b"projection"),
+        ]);
+        let mut responses = vec![response(b"backbone", Some(8))];
+        responses.extend(vec![response(b"corrupted!", Some(10)); ATTEMPTS]);
+        let (url, server) = server(responses);
+        let progress = AtomicU64::new(0);
+        let mut observed = Vec::new();
+        let result = provision_with_callback(
+            directory.path(),
+            &progress,
+            &manifest,
+            &client(),
+            |_| url.clone(),
+            |asset| {
+                assert_eq!(asset, VerifiedAsset::TextBackbone);
+                assert_eq!(
+                    fs::read(directory.path().join(BACKBONE_FILE)).unwrap(),
+                    b"backbone"
+                );
+                observed.push(asset);
+            },
+        );
+        assert!(
+            result.is_err(),
+            "The incomplete bundle must not be successful"
+        );
+        assert_eq!(server.join().unwrap(), ATTEMPTS + 1);
+        assert_eq!(observed, [VerifiedAsset::TextBackbone]);
+        assert_eq!(progress.load(Ordering::Acquire), 8);
+        assert_eq!(
+            fs::read(directory.path().join(PROJECTOR_FILE)).unwrap(),
+            b"oldproject"
+        );
+        assert!(!verified(&directory.path().join(PROJECTOR_FILE), &manifest.files[1]).unwrap());
+        assert_no_part_files(directory.path());
+    }
+
+    #[test]
+    fn corrupt_backbone_never_emits_a_verified_callback() {
+        let directory = tempfile::tempdir().unwrap();
+        fs::write(directory.path().join(BACKBONE_FILE), b"corrupt!").unwrap();
+        let manifest = test_manifest(vec![
+            artifact(BACKBONE_FILE, b"backbone"),
+            artifact(PROJECTOR_FILE, b"projection"),
+        ]);
+        let (url, server) = server(vec![response(b"corrupt!", Some(8)); ATTEMPTS]);
+        let progress = AtomicU64::new(0);
+        let mut observed = Vec::new();
+        assert!(provision_with_callback(
+            directory.path(),
+            &progress,
+            &manifest,
+            &client(),
+            |_| url.clone(),
+            |asset| observed.push(asset)
+        )
+        .is_err());
+        assert_eq!(server.join().unwrap(), ATTEMPTS);
+        assert!(observed.is_empty());
+        assert_eq!(progress.load(Ordering::Acquire), 0);
+        assert!(!directory.path().join(PROJECTOR_FILE).exists());
+        assert_no_part_files(directory.path());
+    }
+
+    #[test]
+    fn partial_backbone_download_never_emits_a_verified_callback() {
+        let directory = tempfile::tempdir().unwrap();
+        let manifest = test_manifest(vec![
+            artifact(BACKBONE_FILE, b"backbone"),
+            artifact(PROJECTOR_FILE, b"projection"),
+        ]);
+        let (url, server) = server(vec![response(b"back", Some(8)); ATTEMPTS]);
+        let progress = AtomicU64::new(0);
+        let mut observed = Vec::new();
+        assert!(provision_with_callback(
+            directory.path(),
+            &progress,
+            &manifest,
+            &client(),
+            |_| url.clone(),
+            |asset| observed.push(asset)
+        )
+        .is_err());
+        assert_eq!(server.join().unwrap(), ATTEMPTS);
+        assert!(observed.is_empty());
+        assert_eq!(progress.load(Ordering::Acquire), 0);
+        assert!(!directory.path().join(BACKBONE_FILE).exists());
+        assert_no_part_files(directory.path());
+    }
+
+    #[test]
+    fn text_callback_precedes_gated_projector_and_full_completion() {
+        use std::sync::mpsc;
+        let directory = tempfile::tempdir().unwrap();
+        fs::write(directory.path().join(BACKBONE_FILE), b"backbone").unwrap();
+        let listener = TcpListener::bind("127.0.0.1:0").unwrap();
+        let url = format!("http://{}/fixture", listener.local_addr().unwrap());
+        let (release, wait) = mpsc::channel();
+        let (headers_sent, headers) = mpsc::channel();
+        listener.set_nonblocking(true).unwrap();
+        let server = thread::spawn(move || {
+            let deadline = Instant::now() + Duration::from_secs(5);
+            let mut stream = loop {
+                match listener.accept() {
+                    Ok((stream, _)) => break stream,
+                    Err(error)
+                        if error.kind() == std::io::ErrorKind::WouldBlock
+                            && Instant::now() < deadline =>
+                    {
+                        thread::sleep(Duration::from_millis(2))
+                    }
+                    Err(error) => panic!("Gated local fixture accept failed: {error}"),
+                }
+            };
+            stream.set_nonblocking(false).unwrap();
+            stream
+                .set_read_timeout(Some(Duration::from_secs(2)))
+                .unwrap();
+            let mut request = Vec::new();
+            let mut buffer = [0u8; 1024];
+            while !request.windows(4).any(|w| w == b"\r\n\r\n") {
+                let n = stream.read(&mut buffer).unwrap();
+                assert!(n > 0);
+                request.extend_from_slice(&buffer[..n]);
+                assert!(request.len() <= 8192);
+            }
+            stream
+                .write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 10\r\nConnection: close\r\n\r\n")
+                .unwrap();
+            headers_sent.send(()).unwrap();
+            wait.recv_timeout(Duration::from_secs(2)).unwrap();
+            stream.write_all(b"projection").unwrap();
+        });
+        let (events, observed) = mpsc::channel();
+        let (done, completion) = mpsc::channel();
+        let path = directory.path().to_path_buf();
+        let provisioning = thread::spawn(move || {
+            let manifest = test_manifest(vec![
+                artifact(BACKBONE_FILE, b"backbone"),
+                artifact(PROJECTOR_FILE, b"projection"),
+            ]);
+            let progress = AtomicU64::new(0);
+            let result = provision_with_callback(
+                &path,
+                &progress,
+                &manifest,
+                &client(),
+                |_| url.clone(),
+                |asset| {
+                    let artifact = match asset {
+                        VerifiedAsset::TextBackbone => &manifest.files[0],
+                        VerifiedAsset::MediaProjector => &manifest.files[1],
+                    };
+                    assert!(verified(&path.join(&artifact.path), artifact).unwrap());
+                    events.send(asset).unwrap();
+                },
+            );
+            done.send(result).unwrap();
+        });
+        assert_eq!(
+            observed.recv_timeout(Duration::from_secs(2)).unwrap(),
+            VerifiedAsset::TextBackbone
+        );
+        headers.recv_timeout(Duration::from_secs(2)).unwrap();
+        assert!(
+            observed.try_recv().is_err(),
+            "Projector is not yet verified"
+        );
+        assert!(
+            completion.try_recv().is_err(),
+            "Bundle must remain incomplete"
+        );
+        assert!(!directory.path().join(PROJECTOR_FILE).exists());
+        release.send(()).unwrap();
+        assert_eq!(
+            observed.recv_timeout(Duration::from_secs(2)).unwrap(),
+            VerifiedAsset::MediaProjector
+        );
+        completion
+            .recv_timeout(Duration::from_secs(2))
+            .unwrap()
+            .unwrap();
+        provisioning.join().unwrap();
+        server.join().unwrap();
+        assert_no_part_files(directory.path());
+    }
 }

crates/searchi-service/src/routing.rs

@@ -22,7 +22,7 @@ impl SemanticOrigin {
 }
 
 /// A conservative intent hint, not a language understanding model. Explicit
-/// document/visual cues veto it; ordinary topic and instrument queries do not
+/// document/visual/code cues veto it; ordinary topic and instrument queries do not
 /// silently restrict modality. Word boundaries avoid filename substrings.
 fn preferred_origin(query: &str) -> Option<SemanticOrigin> {
     if query.split_whitespace().count() == 1 && Path::new(query).extension().is_some() {
@@ -49,6 +49,12 @@ fn preferred_origin(query: &str) -> Option<SemanticOrigin> {
         "screenshot",
         "dokument",
         "textdatei",
+        "code",
+        "function",
+        "implementation",
+        "quellcode",
+        "funktion",
+        "implementierung",
     ]) {
         return None;
     }
@@ -211,6 +217,12 @@ mod tests {
             "a document that someone mentioned",
             "speech.png",
             "a screenshot of an audio waveform",
+            "code that chooses audio search when a query mentions speech",
+            "an implementation for identifying music",
+            "a function that decodes audio samples",
+            "Quellcode für die Suche nach gesprochenen Themen",
+            "eine Funktion für die Verarbeitung von Musik",
+            "Implementierung für die Erkennung von Geräuschen",
         ] {
             assert_eq!(preferred_origin(query), None, "{query}");
         }

crates/searchi-service/tests/routing_google_cpu.rs

@@ -0,0 +1,56 @@
+use anyhow::Result;
+use searchi_core::SearchIndex;
+use searchi_service::{FfmpegTools, HybridSearch, MediaLimits, SearchOptions, SemanticOrigin};
+use std::{fs, path::PathBuf};
+
+#[test]
+#[ignore = "Requires verified Google CPU worker/model and FFmpeg fixtures"]
+fn explicit_code_intent_preserves_code_among_real_audio_candidates() -> Result<()> {
+    assert_eq!(std::env::var("SEARCHI_FORCE_CPU")?, "1");
+    let model = std::env::var_os("SEARCHI_GEMMA_MODEL_DIR").expect("Set model directory");
+    let worker = std::env::var_os("SEARCHI_GEMMA_WORKER").expect("Set worker path");
+    let tools = FfmpegTools {
+        ffmpeg: std::env::var_os("SEARCHI_TEST_FFMPEG")
+            .expect("Set FFmpeg")
+            .into(),
+        ffprobe: std::env::var_os("SEARCHI_TEST_FFPROBE")
+            .expect("Set FFprobe")
+            .into(),
+    };
+    let fixture = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("../../fixtures");
+    let temp = tempfile::tempdir()?;
+    let corpus = temp.path().join("corpus");
+    fs::create_dir(&corpus)?;
+    // Preserve the unchanged diagnostic implementation and actual licensed sound.
+    fs::copy(
+        fixture.join("mixed/sources/crates__searchi-service__src__routing.rs"),
+        corpus.join("routing.rs"),
+    )?;
+    fs::copy(
+        fixture.join("media/assets/sound02.mp3"),
+        corpus.join("sound.mp3"),
+    )?;
+    let database = temp.path().join("index.db");
+    let mut lexical = SearchIndex::open(&database)?;
+    lexical.index_folder(&corpus)?;
+    let mut indexer = HybridSearch::open(&database, &model, &worker, 1)?;
+    let report = indexer.index_embeddings_with_media(&tools, &MediaLimits::default())?;
+    assert!(report.failures.is_empty(), "{report:?}");
+    assert_eq!(report.media_files, 1);
+    drop(indexer);
+    let mut search = HybridSearch::open_query(&database, &model, &worker, 1)?;
+    let query = "code that chooses audio search when a query mentions speech";
+    let options = SearchOptions::default();
+    let audio = search.search_semantic_with_origin(query, 20, &options, SemanticOrigin::Audio)?;
+    assert!(
+        !audio.is_empty(),
+        "The old exclusive audio lane must qualify"
+    );
+    assert!(audio.iter().all(|hit| hit.filename == "sound.mp3"));
+    let hits = search.search_semantic(query, 20, &options)?;
+    assert!(
+        hits.iter().any(|hit| hit.filename == "routing.rs"),
+        "Explicit code intent lost its semantic implementation: {hits:?}"
+    );
+    Ok(())
+}

docs/LINUX-DESKTOP-VALIDATION.md

@@ -219,3 +219,56 @@ process swap; their private `/dev/dxg` was the null device (1:3). Owned shutdown
 ended the app group with SIGTERM and Xvfb with status zero. Subsequent process
 inspection found no remaining app/worker/WebKit/Xvfb/DBus/clipboard helpers,
 and the outer `/dev/dxg` remained the real device (hex a:102).
+
+## Native query-role validation: `5d9cfc4`
+
+Executed on the same provisioned Ubuntu 24.04 x86-64 WSL host. The isolated
+normal `auto` worker was rebuilt with one job, retaining Vulkan and CPU modules.
+All inference used `SEARCHI_FORCE_CPU=1`; the benchmark additionally requested
+`--device cpu` and checked that no Vulkan module loaded. Windows staged resources
+were not changed. Worker SHA-256:
+`b52d50a1e676bd4bf64124daff1c4ce83d86a8bde01e4eaf09838cbb24a4c28f`.
+
+Actual Google checks passed:
+
+- `query_context_cpu`: one passed in **42.88 s**, covering query role/context
+  negotiation, unchanged real vectors/ranking, multilingual CodeRetrieval,
+  exact 512-token boundary, nonfatal oversized rejection, indexing/media guards
+  and full-context document windows. Compilation took 1m 06s.
+- CLI/MCP `actual_google_cli_and_mcp_use_query_role_with_cited_results`: one
+  passed in **38.73 s**, including real indexing with the full role, foreground
+  CLI search, retained MCP query role/context and guarded source excerpts.
+
+Logs remain in the native cache as `query-role-native-build.log`,
+`query-context-linux-test.log`, and `query-context-linux-mcp.log`. These tiny
+fixtures establish native role/client correctness, not representative relevance
+or a release package gate.
+
+After correctness tests and other agents' downloads were terminal, a paired
+benchmark ran six fresh workers, alternating order, three per role, one inference
+thread. Cached model bytes were verified once in **241.48 ms** before process
+trials; process startup excludes that verification and desktop preparation.
+
+| Median observed measurement | Indexing 2048 | Query 512 |
+| --- | ---: | ---: |
+| Startup to ready | 717.08 ms | 564.02 ms |
+| First query IPC/inference | 67.13 ms | 66.89 ms |
+| Ready PSS | 405,303,296 bytes | 405,278,720 bytes |
+| Ready RSS | 406,806,528 bytes | 406,773,760 bytes |
+| Ready private dirty resident pages | 103,739,392 bytes | 103,735,296 bytes |
+| After query PSS | 410,157,056 bytes | 410,001,408 bytes |
+
+Linux resident/PSS observations were effectively unchanged. They must not be
+reported as the Windows private commitment saving; this benchmark does not
+measure Linux virtual commitment. The startup samples are small cached-process
+observations, not cold disk, actual first UI input, pressure behavior or warm p95
+proof. Mapped model pages contribute to resident/PSS figures; do not sum them
+as independent model allocations across workers. Raw paired samples are retained
+locally in `.searchi/qa/query-context-linux.json`; native benchmark output is
+`query-context-linux-benchmark.log`. The benchmark itself also checked nonfatal
+rejection of a direct indexing operation followed by a successful code query.
+
+All owned test and benchmark handles ended successfully. Subsequent process
+inspection found no surviving Google workers, Cargo or Rust compiler processes.
+Native desktop packaging with this new worker, actual GPU, macOS and
+representative performance remain open.

docs/MIXED-QUALITY.md

@@ -105,8 +105,10 @@ restart or substituted model was used. Reproduce with the
 
 ## Open quality gates
 
-- Correct the documented All-files audio-intent suppression without hiding
-  legitimate media results; validate candidate preservation before ranking.
+- Validate the subsequent explicit-code routing fix on broader mixed queries
+  without hiding legitimate media results. A tiny real-model candidate-preservation
+  regression passed; see [routing evidence](RETRIEVAL-ROUTING.md). The frozen
+  baseline recorded here remains the pre-fix measurement.
 - Evaluate general/code query task fusion on a new independently labelled set,
   with bounded retrieval and measured cache/filter costs.
 - Improve music discrimination and precise speech timestamps.

docs/QUERY-CONTEXT.md

@@ -87,6 +87,9 @@ python tools/embeddinggemma2/query_context_benchmark.py --worker "$env:SEARCHI_G
 ```
 
 The benchmark reports Windows private commitment/working set or Linux
-PSS/private resident pages separately. Native Linux/macOS and actual GPU context
+PSS/private resident pages separately. Actual native Linux query/client checks
+and six paired measurements also passed; see
+[Linux evidence](LINUX-DESKTOP-VALIDATION.md). Linux resident/PSS memory was
+effectively unchanged in those samples. Native macOS and actual GPU context
 allocation/parity, pressure behavior, long code queries, representative query
 latency and updated installed desktop packaging remain release checks.

docs/RETRIEVAL-ROUTING.md

@@ -55,3 +55,25 @@ The existing `semantic.eligibility` and
 `semantic.eligibility_filtered_scan_and_hash` traces expose eligibility cost.
 Use an independently reviewed held-out corpus for acceptance; the frozen
 diagnostic alone must not become the optimization target.
+
+## Narrow suppression fix and actual regression
+
+After the frozen baseline confirmed the English speech-related code failure,
+explicit code/function/implementation cues now veto automatic audio preference,
+alongside the existing document/image cues. English and German cues are covered
+by the routing unit test. This changes candidate eligibility through routing;
+it does not add CodeRetrieval to All files or implement soft multi-lane fusion.
+
+The ignored integration `routing_google_cpu` passed on Windows CPU in **38.40 s**
+using the verified normal worker and Google model, unchanged frozen routing
+source bytes and the licensed real roaring-creature sound. The same remembered
+code query produced qualifying audio candidates through the explicit Audio
+diagnostic lane. Updated default semantic routing also returned the source
+implementation, proving the exclusive suppression is removed in this fixture.
+The test asserts candidate preservation, not top-1 superiority or broad quality.
+The full mixed baseline above remains the unchanged pre-fix measurement.
+
+With this fix and the verified-asset callback, the Windows CPU workspace suite
+passed 130 tests (23 explicitly ignored integration/resource checks), desktop
+Rust passed 28, and both strict all-target Clippy checks and formatting passed.
+The ignored actual routing regression was executed separately as described above.

docs/ROADMAP.md

@@ -186,9 +186,15 @@ Audit and measured priorities: [EMBEDDINGGEMMA2-AUDIT.md](EMBEDDINGGEMMA2-AUDIT.
     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.
+  - [x] Native Linux query-context and CLI/MCP cited-result checks, with six
+    paired CPU process measurements; resident/PSS memory effectively unchanged.
+  - [ ] Verify native 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.
+    - [x] Typed backbone/projector verification callbacks with full-pair setup
+      semantics preserved; 16 asset tests passed, including gated media download.
+    - [ ] Integrate explicit text/media coverage, retained query readiness and
+      media retry status across engine/desktop; verify actual first use.
 - [ ] 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
@@ -219,6 +225,8 @@ Completion requires recorded evidence; targets are not measured results.
     returned candidates. See [mixed quality](MIXED-QUALITY.md).
   - [ ] Measure task fusion and cache cost against independently reviewed
     held-out data, preserving the frozen diagnostic for regression comparison.
+  - [x] Explicit English/German code intent vetoes exclusive audio routing;
+    actual Google CPU regression preserves code among qualifying audio candidates.
 - [ ] Validate code search UI interaction on native Windows/macOS/Linux and
   actual GPU hardware. Tiny CPU fixtures do not close those release gates.
 

docs/SPEECH-ALIGNMENT.md

@@ -6,8 +6,9 @@ Google EmbeddingGemma 2 remains the production semantic model.
 
 A bounded [CPU diagnostic harness](../tools/speech-eval/README.md) is now prepared.
 Seven structural tests passed on Windows, including actual owned subprocess
-failure, timeout, output overflow and retained diagnostics. No ASR model has been
-downloaded or run for this proof; these tests establish no speech quality.
+failure, timeout, output overflow and retained diagnostics. Both candidate models
+have now been downloaded and their exact bytes/SHA verified. Neither has been
+loaded or evaluated; these tests establish no speech quality.
 
 ## Why add a transcript lane
 
@@ -60,9 +61,13 @@ Model metadata was read from the Hugging Face blob API at repository revision
 
 Use immutable download URLs of the form
 `https://huggingface.co/ggerganov/whisper.cpp/resolve/5359861c739e955e79d9a303bcbc70fb988958b1/ggml-base.bin`.
-These are **publisher metadata**, not hashes verified from downloaded bytes yet.
-Commit a manifest only after a genuine download verifies exact size/SHA, model
-loading and provenance. Never accept upstream `for-tests-*` empty models.
+Both downloads were independently checked against these exact bytes/SHA values
+on 2026-10-13. The clean runtime checkout resolves to the pinned commit; model
+URLs, verified hashes and MIT notices are retained under ignored
+`.searchi/speech/provisioning.json`. This is provisioning evidence only: no
+runtime build, model loading or inference has yet been performed. Commit an
+accepted distribution manifest only after model loading and runtime provenance
+checks. Never accept upstream `for-tests-*` empty models.
 [Upstream model provenance](https://github.com/ggml-org/whisper.cpp/blob/master/models/README.md),
 [blob metadata](https://huggingface.co/api/models/ggerganov/whisper.cpp?blobs=true).