Archive wahoo-import and journal-route-previews, sync specs

Archive completed changes and sync their delta specs to main:
- wahoo-import: new wahoo-import spec, updated journal-auth and account-settings
- journal-route-previews: new route-preview spec, updated map-display and route-management

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

openspec/specs/route-preview/spec.md

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+## ADDED Requirements
+
+### Requirement: Route map preview on list pages
+Route and activity list pages SHALL show a small map thumbnail for each item that has geometry.
+
+#### Scenario: Route with geometry
+- **WHEN** the routes list page loads and a route has a `geom` column
+- **THEN** a small map thumbnail is rendered showing the route path
+- **AND** the map auto-fits to the route bounds
+
+#### Scenario: Route without geometry
+- **WHEN** a route has no `geom` (legacy route)
+- **THEN** a placeholder is shown instead of a map thumbnail
+
+#### Scenario: Activity with geometry
+- **WHEN** the activities list page loads and an activity has a `geom` column
+- **THEN** a small map thumbnail is rendered showing the activity path
+
+### Requirement: Interactive map on detail pages
+Route and activity detail pages SHALL show an interactive read-only map with the route/activity drawn.
+
+#### Scenario: Route detail with geometry
+- **WHEN** a user views a route detail page and the route has geometry
+- **THEN** a full-width interactive map is shown with the route path
+- **AND** the map has zoom controls and layer switching
+- **AND** the map auto-fits to the route bounds
+
+#### Scenario: Activity detail with geometry
+- **WHEN** a user views an activity detail page and the activity has geometry
+- **THEN** a full-width interactive map is shown with the activity path
+
+#### Scenario: Detail page without geometry
+- **WHEN** a route or activity has no geometry
+- **THEN** no map section is rendered