Let yaak-models compile for wasm32-unknown-unknown

[gschier]

Groundwork for running the real model layer (SQLite included) in a browser tab for web.yaak.app.

• rusqlite 0.32 → 0.38, the first release with a wasm32 target (r2d2_sqlite 0.32, libsqlite3-sys 0.36 in lockstep); sea-query 0.32 → 1.0 so upstream sea-query-rusqlite 0.8 pairs the two. The only 1.0 change that reaches us is ExprTrait needing to be in scope — one import per file that builds a where-clause
• SqlitePool / SqliteConn seam in yaak-database. r2d2 is thread-based and cannot run on wasm; natively these are type aliases for the r2d2 types, on wasm a shared handle to a single connection. The pool never hands out &mut (transactions open via Transaction::new_unchecked), so the nested connect() pattern the model layer relies on works on both targets. r2d2 becomes a native-only dependency
• getrandom/uuid js features on wasm; the migrator's Instant timer cfg'd out there

No query or model logic changes. Native tests pass; CLI and app compile.

Verified end to end: yaak-models runs its 70 migrations, list_workspaces bootstrap and upsert_http_request in a browser tab against an IndexedDB-backed VFS, persists across reload, and nested connections (including a read inside an open with_tx) work. The wasm crate that does that is the next PR.

Building for wasm32 needs a clang with a WebAssembly backend (sqlite-wasm-rs compiles sqlite3.c at build time). Apple clang has none; Homebrew LLVM works via CC_wasm32_unknown_unknown=/opt/homebrew/opt/llvm/bin/clang AR_wasm32_unknown_unknown=/opt/homebrew/opt/llvm/bin/llvm-ar. No CI job for the wasm target yet.

[greptile-apps]

Greptile Summary

The PR makes the database and model crates compatible with wasm32-unknown-unknown while retaining native r2d2 pooling.

• Introduces target-specific SqlitePool and SqliteConn implementations.
• Uses a shared single SQLite connection on wasm and native r2d2 pools elsewhere.
• Updates SQLite and SeaQuery dependencies and adapts query imports.
• Configures browser-compatible randomness and migration timing.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
crates/common/yaak-database/src/pool.rs	Adds the target-specific pool abstraction and resolves the previously reported wasm nested-checkout failure by returning shared connection handles.
crates/yaak-models/src/query_manager.rs	Migrates QueryManager to the pool abstraction and opens transactions from immutable connection references.
crates/yaak-models/src/lib.rs	Centralizes target-specific file and in-memory pool creation while preserving native connection initialization.
crates/yaak-models/src/migrate.rs	Adapts migration transactions to shared connection handles and disables unavailable monotonic timing on wasm.
crates/common/yaak-database/Cargo.toml	Moves thread-based pooling to native-only dependencies and enables browser randomness support on wasm.
Cargo.lock	Records the coordinated SQLite, pooling, wasm VFS, and SeaQuery dependency updates.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[yaak-models query layer] --> B[SqlitePool seam]
    B -->|Native| C[r2d2 connection pool]
    B -->|wasm32| D[Shared Rc SQLite connection]
    C --> E[SQLite database]
    D --> F[Browser-registered SQLite VFS]

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_{Reviews (2): Last reviewed commit: "Bump sea-query to 1.0 and drop the vendo..." | Re-trigger Greptile}

[gschier]

@greptile-apps