Add LDA topic inference — show detected topic label + defining words in UI

Add ML model comparison panel showing BoW, TF-IDF, Naive Bayes, and LDA results

Remove Firebase/Firestore from backend — use local JSON persistence only

fix: remove calamancy and firebase-admin from requirements (unused, breaking HF build)

fix: remove leftover 'source' variable reference after Firebase removal

refactor: remove Firebase dependency — use REST API for history

fix: remove large model file from git, add ml/models/ to .gitignore

feat: extension button placement, text extraction, OCR display + ML improvements

feat: landing page UX improvements — mock result card, crosshatch hero, teaser centering, nav home link

ux: improve landing — fix step visuals, add try-it teaser input, expand footer with nav links

feat: add landing page — hero, modes, how-it-works, stats, CTA band

docs: update README with current deployment, features, and project structure

feat: add clickable example suggestion chips for text and url tabs

feat: add video frame OCR — extract on-screen text alongside Whisper ASR

fix: add HEAD method to health endpoints for UptimeRobot

fix: use valid emoji for HF Spaces metadata

chore: add HF Spaces deployment config and fix frontend API URL

docs: redesign README with premium style

docs: add machine learning 2 final project to readme

Fix: Overhaul Facebook post detection to filtered comments using [role='feed'] strategy and improve button positioning

fix(extension): exclude comment articles from Facebook post detection

feat: oEmbed scraping for Facebook/X URLs, remove social URL blocks

fix(frontend): block social URL preview + better error card for social URLs

fix(extension): init() no longer exits when service worker returns undefined

feat(extension): convert popup to persistent side panel

fix(extension): block social URLs in popup, show paste-text hint

fix(extension): insert missing PLATFORM_CFG/CFG/IS_SOCIAL config block

feat(extension): X/Twitter support, image OCR fallback, cleanup IS_FACEBOOK

feat(extension): production API URL, PH news site support, article auto-verify

fix: cold start 502, favicon, verify state persistence

feat(frontend): apply frontend-design, web-design-guidelines, architect-review skills

chore: add docs/*.json to gitignore, remove misplaced service account key

feat: Firebase integration — Firestore persistence, firebase.json hosting + Cloud Run rewrite

docs: add README

feat: PhilVerify Phase 1-3 — FastAPI backend, NLP pipeline, TF-IDF classifier (23/23 tests)