feat(optimizer): stage and goal selection controls

feat(optimizer): add diff highlighting

fix(optimizer): title stage rewrites Title field only, return optimized_title

Optimizer: SSE log panel + static app.js (SES-safe nv), no global loader; HF_SES doc

Revert "Optimizer: SSE progress, cancel job with partial result, UI progress card"

Optimizer: SSE progress, cancel job with partial result, UI progress card

Add configurable BERT stage target and stage visibility in optimizer.

Add ensemble phrase strategy mode for optimizer.

Add configurable phrase strategy mode for LLM optimizer.

Tune optimizer acceptance policy and add optimization modes

Add LLM optimizer tab with iterative constrained text improvements

Add Portuguese language support across app and deployment

Add URL-based text and title import with user-agent presets

Improve Semantic Core UX and add competitor document analysis

Add TextAnalyst Semantic Core endpoints and modules

Add Title analyzer: length, ngrams, keyword coverage, BERT semantic

Add Word Count stats block above tabs (General Stats)

Initial commit: SEO AI Editor MVP with BERT, BM25 and N-gram analysis