[fix] correct city names in address autocomplete dropdown

[ruchirx]

Summary

• Google Places Autocomplete secondaryText returns Census Designated Place (CDP) names like "Briarcliff, TX" instead of the USPS postal city "Austin, TX" for addresses in those areas
• After fetching autocomplete suggestions, we now also fetch addressComponents via Place Details for each suggestion (in parallel) to get the correct locality
• Uses the same city extraction logic as parseAddress (locality > sublocality > administrative_area_level_2)
• Corrections are cached by placeId to avoid redundant fetches

Test plan

• Search "6200 Hilltop Plateau Dr" — dropdown should show "Austin, TX" not "Briarcliff, TX"
• Search a normal Austin address (e.g. "1100 Congress Ave") — should still show "Austin, TX"
• Select an address — input field and final parsed result should have correct city
• Verify no visual flicker (suggestions appear with correct city, not wrong-then-corrected)

🤖 Generated with Claude Code

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