fix(locations): separate Geoapify address fields and retained feature display

[stef-k]

Geoapify display strings could place a nearby POI name in the street-address field and give it undue prominence in Location views. Map structured street/number, settlement and state fields according to their meaning; retain FullAddress compatibility and independently preserve address_line1 as ProviderAddressLine1. Compose Geoapify Location addresses from structured components and show qualified feature text below them across Location, Timeline, public/embed, group and edit-summary surfaces.

Preserve historical stored values, fill-only repair, manual-edit authority, Mapbox mappings/display and Trip FullAddress preference. Add the retained line to Location projections and backend format round trips. Fix CSV publication timestamp encoding and preserve internal retained-line whitespace across imports; XML formats normalize CRLF to LF.

Closes #572. #573 region identity/statistics and #505 Mobile coordination remain outside scope.

Migration: 20260905095140_AddLocationProviderAddressLine1 adds only nullable Locations.ProviderAddressLine1 varchar(500), with matching model/snapshot. No historical data rewrite. Applied only through the dedicated test prerequisite; production migration/deployment not performed.

Validation:

• Full independent review found one retention blocker; focused re-review at bd1ce14 confirms it resolved and returns READY FOR PR, no reachable new defect.
• Full reviewer freshly passed 248 focused backend tests including PostgreSQL, 117 client tests, frontend builds and model consistency checks before remediation.
• Re-review freshly passed 115 focused format/parser, tuple-import and Geoapify tests, zero failures/skips. Eight actual exporter-to-parser red cases were retained before remediation. Counts overlap and are not additive.
• Four-format round trips cover LF/CRLF, tabs, Unicode and escaping, preserving historical address strings and provenance.
• Code Guard complete-branch REVIEW only; accepted existing orchestration, cohesive mappings and historical changelog within committed allowances. No FAIL/INCOMPLETE or policy/baseline changes. Whitespace checks passed.

Visual evidence: reviewer rendered the production formatter with Bootstrap and Location modal wrapper at 360px; feature text was below the address, 14px versus 16px, muted, with no horizontal overflow. Screenshot retained locally at .local/issue572-independent-wrapping.png; no public image URL attached. Authenticated full-page/Edit mounting remains unobserved, independently assessed as nonblocking given lower-seam coverage.

Limits: no full-suite-green claim. No historical provider-response completeness claim, production access/provider contact, or Mobile modification. Released Mobile preserves existing fields but cannot promise unknown-field retention through its own offline formats.

Merge gate: GitHub Actions test succeeds on the exact current PR head.