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1db601b82f
* add PhishingIndexedDbService for IndexedDB storage
Add a dedicated IndexedDB storage service for phishing detection data.
This service provides save, load, and clear operations using IndexedDB
instead of chrome.storage.local to avoid broadcast overhead, size
limitations, and JSON serialization cost for large datasets.
* add unit tests for PhishingIndexedDbService
Add comprehensive tests for save, load, and clear operations with
mocked IndexedDB. Tests cover success cases, error handling, and
database initialization with object store creation.
* add PhishingIndexedDbService core structure
- Add IndexedDB service with per-operation database opening
- Define PhishingUrlRecord type for row storage
- Include clearStore helper for atomic data replacement
- Service worker safe: no cached connections
* add saveUrls with chunked writes
- Add PhishingUrlRecord type for row storage
- Store each URL as individual row
- Chunk writes at 50K per transaction for responsiveness
- Atomic replacement: clear then save
* add hasUrl for lookups
- Direct IndexedDB index lookup via keyPath
- Returns boolean, handles errors gracefully
* add loadAllUrls with cursor iteration
- Cursor-based bulk load for fallback scenarios
- Memory-efficient: no intermediate array duplication
- Returns empty array on error
* add saveUrlsFromStream for memory efficiency
- Stream directly from fetch response body
- Parse newline-delimited URLs incrementally
- Reuse chunked save infrastructure
* update PhishingIndexedDbService tests
- Replace blob-based tests with row-per-URL API tests
- Test saveUrls, hasUrl, loadAllUrls, saveUrlsFromStream
- Verify chunked writes and cursor iteration
- Use stream/web ReadableStream with type cast for Node.js compatibility
* use proper URL syntax and cleanup global state
Update test data to use proper URL syntax with https:// prefix to match
real phishing.database format. Add cleanup of global.indexedDB in
afterEach to prevent test pollution.
* improve stream processing correctness and efficiency
- Move decoder.decode() before done check with { stream: !done } to flush properly
- Use array reassignment instead of splice() for O(1) chunk clearing
- Use single trim via local variable to avoid double-trim
- Centralize URL cleaning in saveChunked(), simplify saveChunk()
- Use explicit urls.length > 0 comparison
* duplicate urls test
* split final buffer by newlines