v0.6.8

[gitronald]

• version [prerelease]: 0.6.8a0
• add overlay_precise_location to serp features
• move FeatureExtractor to own module with SERPFeatures dataclass
• fix result_estimate_time regex to match short format (0.XXs)
• classify things to know as knowledge/things_to_know
• update screenshot to re-insert extracted elements
• update demo_searches with inline queries, type filter, and fixes
• fix double knowledge component for dictionary queries
• add short_videos classifier/parser, extract bottom ads before main column
• add ai_overview classifier, fix latest_from and local_news header detection
• update discussions_and_forums parser for new sub-component selectors
• add bOeY0b sitelink format to ad menu parser
• fix standard-0 layout check to require TzHB6b content divs
• add A6K0A as alternative content div for standard-0 layout
• add v0.6.8 test fixture with 52 serps, update snapshots
• add locations parser, sponsored hotel ads, update snapshots
• update screenshot logic to avoid clobbering output via extractor
• add temp utility script for getting csv from demo json data
• update demo searches to use a single browser session
• version [prerelease]: 0.6.8a1
• reorder main-section components by DOM position
• version [prerelease]: 0.6.8a2
• add local service ad parser
• extract bottom ads before main column
• add flights classifier and standard-4 layout
• move return out of finally block to fix syntax warning
• migrate from poetry to uv
• update github actions, docs, and scripts from poetry to uv
• update to python 3.14 and test matrix for 3.12-3.14
• version [prerelease]: 0.6.8a3
• version [patch]: 0.6.8