Scope

This document isolates the tender legacy compatibility route shell from the gateway-side legacy outbox bridge that still lives in the same services/api module.

It is not removal planning. It is a boundary-clarification step before later removal planning.

Route / Action Inventory

| Route | Local action | Route classification | Bridge classification | Operational need today | Separable? | Looks isolatable next? | | --- | --- | --- | --- | --- | --- | --- | | POST /api/v1/tenders/legacy/propose | proposeTenderFromKes | legacy compatibility route that also triggers gateway-side bridge behavior | emits TENDER_CREATED through the bridge helper | yes | yes | yes | | POST /api/v1/tenders/legacy/:id/bids | submitLegacyBid | legacy compatibility route that also triggers gateway-side bridge behavior | emits BID_SUBMITTED through the bridge helper | yes | yes | yes | | POST /api/v1/tenders/legacy/:id/close | closeLegacyBidding | legacy compatibility route that also triggers gateway-side bridge behavior | emits BIDDING_CLOSED through the bridge helper | yes | yes | yes | | POST /api/v1/tenders/legacy/:id/award/propose | proposeLegacyAward | legacy compatibility route that also triggers gateway-side bridge behavior | emits AWARD_PROPOSED through the bridge helper | yes | yes | yes | | POST /api/v1/tenders/legacy/:id/award/ratify | ratifyLegacyAward | legacy compatibility route that also triggers gateway-side bridge behavior | emits AWARD_RATIFIED through the bridge helper | yes | yes | yes |

What The Route Shell Still Does

The route shell in legacyRoutes.ts:

• checks LEGACY_TENDERS_LOCAL_ENGINE_ENABLED
• resolves the gateway-local legacy viewer
• reads request input
• runs local-engine tender compatibility actions from engine.ts
• maps route-level error responses

That route shell is compatibility behavior. It is not canonical upstream tender action ownership.

Actual Bridge Ownership Inventory

Bridge helper

• Current implementation lives in:
  • legacyRoutes.ts
• Current helper:
  • enqueueLegacyTenderBridgeEvent(...)

What the bridge does

• posts to TENDERS_SERVICE_URL
• uses LEGACY_TENDERS_OUTBOX_PATH, default /legacy/tenders/events
• attaches:
  • tenderId
  • eventType
  • actorId
  • intentId
  • dedupeKey
  • payload

What calls the bridge

• only the tender legacy compatibility routes in legacyRoutes.ts

Why the bridge still exists

• it preserves the older gateway-side append path into the legacy tender outbox flow
• that flow is still operationally real in docs and code:
  • EVENT_CATALOG.md
  • EVENT_DRIVEN_ARCHITECTURE.md

Which Parts Are Route Compatibility Only

• route path mounting under /api/v1/tenders/legacy/*
• request parsing and route-level response shaping
• local-engine action execution against engine.ts

Which Parts Are Bridge Behavior

• the optional enqueue to TENDERS_SERVICE_URL + LEGACY_TENDERS_OUTBOX_PATH
• event-type selection:
  • TENDER_CREATED
  • BID_SUBMITTED
  • BIDDING_CLOSED
  • AWARD_PROPOSED
  • AWARD_RATIFIED
• intentId and dedupeKey derivation
• bridge failure mapping to 502 legacy_outbox_enqueue_failed

What Remains Operationally Needed

• the route shell remains live mounted API surface
• the bridge remains operationally meaningful because it appends to a documented legacy event/outbox path
• I did not find verified direct in-repo app callers, but that absence does not make the bridge dead

What Looks Isolatable Next

The strongest next isolation step is:

• keep the public /api/v1/tenders/legacy/* route shape unchanged
• move the gateway-side outbox bridge into a dedicated helper/module with explicit compatibility naming
• leave the local-engine route shell separate from that bridge contract

That would reduce ambiguity without starting removal.

Notes

• Route compatibility and bridge behavior are separable in code today even though they still live in the same file.
• The current blocker is conceptual/ownership ambiguity, not missing runtime scaffolding.