trails/openspec/changes/deepen-connected-services/proposal.md

Why

The current SyncProvider interface (apps/journal/app/lib/sync/types.ts:88-118) is OAuth-shaped: it bakes getAuthUrl, exchangeCode, refreshToken, parseWebhook, and pushRoute? into one fat interface. Wahoo is the only adapter today, and the abstraction is a hypothetical seam. With Komoot (web-login, no official API) and Apple Health (mobile-pushed, no remote credential) both in flight, that seam is about to break: a unified interface fills with NOPs and forces every future provider to inherit OAuth assumptions.

This change reshapes the seam before the second and third adapters land — so Komoot and Apple Health fit cleanly instead of distorting the architecture. Decisions are recorded in docs/adr/0001-0003; vocabulary in CONTEXT.md.

What Changes

• BREAKING (DB): rename journal.sync_connections → journal.connected_services. Add credential_kind text column (discriminator: oauth | web-login | device) and credentials JSONB column. Backfill existing Wahoo rows: credential_kind='oauth', move access_token / refresh_token / expires_at into the JSONB blob. Drop the old token columns.
• BREAKING (code): replace SyncProvider interface with three capability seams: Importer, RoutePusher, WebhookReceiver. Each provider declares which capabilities it implements via a co-located manifest (providers/<name>/manifest.ts); a small providers/registry.ts imports each.
• New module ConnectedServiceManager at apps/journal/app/lib/connected-services/manager.ts owning credential lifecycle: link / unlink / withFreshCredentials / markNeedsRelink. Centralizes token-refresh logic currently inlined in pushes.server.ts (~lines 145-170).
• New per-kind module CredentialAdapter. oauth adapter ships with this change (refresh / revoke). web-login adapter lands with komoot-import; device adapter lands with mobile-app. The credential_kind enum carries all three from day one to avoid a follow-up migration.
• RoutePusher seam shape: pushRoute(service, route) → {remoteId, version}. Wahoo's FIT-Course conversion, the route:<id> external_id convention, and the PUT→POST-on-404 fallback stay inside the Wahoo adapter — they are not part of the seam (per ADR-0003).
• Wahoo's existing code splits into providers/wahoo/{importer.ts, pusher.ts, webhook.ts, manifest.ts}; existing tests reorganize accordingly.
• Spec deltas: rename sync_connections → connected_services in connected-services/spec.md, wahoo-import/spec.md, wahoo-route-push/spec.md. Add capability-seam terminology to connected-services/spec.md.

Capabilities

New Capabilities

(none — this change reshapes existing capabilities, it does not introduce new user-visible behaviour.)

Modified Capabilities

• connected-services: requirement-level changes — credential storage shape (credential_kind discriminator + JSONB), provider model (capability seams instead of unified SyncProvider), token-refresh policy (centralized via ConnectedServiceManager.withFreshCredentials).
• wahoo-import: rename of underlying table and refactor of how the importer obtains credentials (via manager, not via direct table read). User-visible behaviour unchanged.
• wahoo-route-push: rename of underlying table; RoutePusher seam shape codified. User-visible behaviour unchanged.

Impact

• Code: apps/journal/app/lib/sync/ is replaced by apps/journal/app/lib/connected-services/ (manager + credential adapters + registry) and apps/journal/app/lib/connected-services/providers/wahoo/ (split capability modules). Routes and jobs that read sync data update their imports.
• DB: one migration — rename + add columns + backfill + drop legacy columns. Production connected_services row count is small (sandbox era); backfill is online-safe.
• Tests: wahoo.test.ts (285 lines) and pushes.server.test.ts (309 lines) reorganize to test capabilities (importer.test.ts, pusher.test.ts, webhook.test.ts) against a fake ConnectedServiceManager yielding stub credentials. New manager.test.ts covers refresh / needs_relink transitions.
• Specs: 3 spec files updated (table rename + terminology). No removals.
• Out of scope (separate follow-on changes): komoot-import (will be amended to use this architecture instead of its drafted journal.integrations table); mobile-app (Apple Health provider lands there). Neither is touched by this change beyond a reference.
• Decision references: docs/adr/0001-connected-services-credential-discriminator.md, docs/adr/0002-no-unified-syncprovider-interface.md, docs/adr/0003-routepusher-seam-shape.md, CONTEXT.md (Connected Services section).