Add web search microservice with multi-provider aggregation

.changeset/web-search-initial.md

@@ -0,0 +1,42 @@
+---
+'@link-assistant/web-search': minor
+---
+
+Add web search microservice with multi-provider aggregation
+
+**Features:**
+
+- Multi-provider search aggregation (Google, DuckDuckGo, Bing)
+- Multiple merge strategies: Reciprocal Rank Fusion (RRF), weighted scoring, interleaving
+- Configurable provider weights for reranking
+- URL normalization for proper deduplication across providers
+- API-first design with fallback to web scraping
+- browser-commander integration for direct browser search testing
+
+**JavaScript Library:**
+
+- Search provider interfaces with API support and scraping fallback
+- Result merger with RRF, weighted, and interleave strategies
+- WebSearchEngine class for multi-provider search
+- Express.js REST API server
+- CLI tool for command-line usage
+
+**Rust Library:**
+
+- Async search providers using reqwest and scraper
+- Result merger with same strategies as JavaScript version
+- WebSearchEngine with async search
+- Axum REST API server
+- CLI tool with clap
+
+**REST API Endpoints:**
+
+- GET /search?q=<query> - Search all providers
+- POST /search - Search with options in body
+- GET /search/:provider?q=<query> - Search single provider
+- GET /providers - List available providers
+- GET /health - Health check
+
+**CI/CD:**
+
+- Added rust.yml workflow for Rust CI (lint, test matrix, build)

.github/workflows/release.yml

@@ -309,7 +309,7 @@ jobs:
 
       - name: Run tests (Deno)
         if: matrix.runtime == 'deno'
-        run: deno test --allow-read
+        run: deno test --allow-read --allow-env
 
   # Release - only runs on main after tests pass (for push events)
   release:

.github/workflows/rust.yml

@@ -0,0 +1,117 @@
+name: Rust CI
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'rust/**'
+      - '.github/workflows/rust.yml'
+  pull_request:
+    types: [opened, synchronize, reopened]
+    paths:
+      - 'rust/**'
+      - '.github/workflows/rust.yml'
+
+concurrency:
+  group: rust-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: -Dwarnings
+
+defaults:
+  run:
+    working-directory: rust
+
+jobs:
+  # === LINT AND FORMAT CHECK ===
+  lint:
+    name: Lint and Format
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            rust/target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('rust/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Run Clippy
+        run: cargo clippy --all-targets --all-features
+
+  # === TEST ===
+  test:
+    name: Test (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    needs: [lint]
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            rust/target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('rust/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Run tests
+        run: cargo test --all-features --verbose
+
+      - name: Run doc tests
+        run: cargo test --doc --verbose
+
+  # === BUILD ===
+  build:
+    name: Build Package
+    runs-on: ubuntu-latest
+    needs: [lint, test]
+    if: always() && !cancelled() && needs.lint.result == 'success' && needs.test.result == 'success'
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            rust/target
+          key: ${{ runner.os }}-cargo-build-${{ hashFiles('rust/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-build-
+
+      - name: Build release
+        run: cargo build --release --verbose
+
+      - name: Check package
+        run: cargo package --list

.prettierignore

@@ -5,5 +5,7 @@ dist
 package-lock.json
 .eslintcache
 CLAUDE.md
+# Rust build artifacts
+rust/target
 # Case study raw data files (downloaded from external sources)
 docs/case-studies/*/data/