BoosAPI/docs/plans/2026-03-22-single-source-consolidation-pr1.md

Single Source Consolidation PR1 Implementation Plan

For Claude: REQUIRED SUB-SKILL: Use superpowers:executing-plans to implement this plan task-by-task.

Goal: Land PR1 for the highest-value duplication and double-source issues around responses normalization, shared proxy surface orchestration, provider runtime headers, token-route contract sharing, account mutation workflow, and standard API platform helpers.

Architecture: Keep PR1 focused on extracting shared single-source modules and rewiring existing callers to consume them. Do not expand this PR into schema metamodel rewrites, chatFormatsCore breakup, or mobile page scaffold work; those remain follow-up PR scope once the highest-risk protocol and workflow duplications are removed.

Tech Stack: TypeScript, Fastify, Vitest, shared server/web modules under src/shared, server proxy-core surfaces/providers/services, React admin pages.

---

Task 1: Savepoint Commit

Files:

• Commit: src/server/config.ts
• Commit: src/server/config.test.ts
• Commit: src/server/db/proxyFileSchemaCompatibility.ts
• Commit: src/server/db/proxyFileSchemaCompatibility.test.ts

Step 1: Verify the savepoint changes

Run: npm test -- src/server/config.test.ts src/server/db/proxyFileSchemaCompatibility.test.ts Expected: PASS

Step 2: Commit the savepoint

Run:

git add src/server/config.ts src/server/config.test.ts src/server/db/proxyFileSchemaCompatibility.ts src/server/db/proxyFileSchemaCompatibility.test.ts
git commit -m "fix: trust proxy headers and align proxy file mysql indexes"

Step 3: Cherry-pick into PR1 branch

Run:

git cherry-pick <savepoint-commit>

Expected: first commit preserved inside PR1 branch before the larger consolidation commit.

Task 2: Responses Single Source

Files:

• Create: src/server/transformers/openai/responses/normalization.ts
• Modify: src/server/transformers/openai/responses/conversion.ts
• Modify: src/server/transformers/openai/responses/compatibility.ts
• Test: src/server/transformers/openai/responses/conversion.test.ts

Step 1: Move shared normalization helpers into one source

Keep normalizeResponsesInputForCompatibility, normalizeResponsesMessageContent, and related block normalization in normalization.ts.

Step 2: Rewire both callers

Make conversion.ts and compatibility.ts import the shared helpers instead of maintaining their own independent copies.

Step 3: Verify parity

Run: npm test -- src/server/transformers/openai/responses/conversion.test.ts Expected: PASS, including assertions that compatibility exports point at the shared implementation.

Task 3: Shared Surface Orchestration

Files:

• Create: src/server/proxy-core/surfaces/sharedSurface.ts
• Modify: src/server/proxy-core/surfaces/chatSurface.ts
• Modify: src/server/proxy-core/surfaces/openAiResponsesSurface.ts
• Modify: src/server/proxy-core/surfaces/geminiSurface.ts
• Test: src/server/proxy-core/surfaces/sharedSurface.test.ts

Step 1: Extract common orchestration primitives

Centralize channel selection, dispatch, proxy logging, retry/failure handling, and common failure response shaping in sharedSurface.ts.

Step 2: Rewire surface callers

Make chat and responses surfaces consume the shared orchestration helpers instead of each keeping a parallel flow.

Step 3: Verify behavior

Run: npm test -- src/server/proxy-core/surfaces/sharedSurface.test.ts Expected: PASS

Task 4: Provider Header Builders

Files:

• Create: src/server/proxy-core/providers/headerUtils.ts
• Modify: src/server/proxy-core/providers/codexProviderProfile.ts
• Modify: src/server/proxy-core/providers/claudeProviderProfile.ts
• Modify: src/server/proxy-core/providers/geminiCliProviderProfile.ts
• Modify: src/server/routes/proxy/upstreamEndpoint.ts
• Test: src/server/proxy-core/providers/headerUtils.test.ts

Step 1: Extract header parsing and runtime header construction

Keep Codex, Claude, and Gemini CLI runtime header shaping in headerUtils.ts.

Step 2: Remove duplicate builders

Make both provider profiles and upstreamEndpoint.ts call the shared header builders.

Step 3: Verify behavior

Run: npm test -- src/server/proxy-core/providers/headerUtils.test.ts Expected: PASS

Task 5: Cross-Layer Token Route Contract

Files:

• Create: src/shared/tokenRouteContract.js
• Create: src/shared/tokenRouteContract.d.ts
• Create: src/shared/tokenRoutePatterns.js
• Create: src/shared/tokenRoutePatterns.d.ts
• Modify: src/server/services/tokenRouter.ts
• Modify: src/server/routes/api/tokens.ts
• Modify: src/web/pages/token-routes/utils.ts
• Modify: src/web/pages/token-routes/types.ts
• Modify: src/web/pages/helpers/routeListVisibility.ts
• Modify: src/web/pages/Settings.tsx
• Test: src/shared/tokenRouteContract.test.ts
• Test: src/shared/tokenRoutePatterns.test.ts

Step 1: Extract shared route mode and pattern matching

Make route mode normalization and model pattern matching authoritative in src/shared.

Step 2: Rewire server and web

Make token router, route APIs, token-routes helpers, and settings consume the shared contract instead of maintaining separate copies.

Step 3: Verify behavior

Run: npm test -- src/shared/tokenRouteContract.test.ts src/shared/tokenRoutePatterns.test.ts Expected: PASS

Task 6: Account Mutation Workflow

Files:

• Create: src/server/services/accountMutationWorkflow.ts
• Modify: src/server/routes/api/accounts.ts
• Modify: src/server/routes/api/accountTokens.ts
• Test: src/server/services/accountMutationWorkflow.test.ts

Step 1: Extract convergence workflow

Move token sync, default token ensure, balance refresh, model refresh, and route rebuild sequencing into accountMutationWorkflow.ts.

Step 2: Rewire controllers

Make account and account-token APIs call the workflow service instead of each owning private orchestration logic.

Step 3: Verify behavior

Run: npm test -- src/server/services/accountMutationWorkflow.test.ts Expected: PASS

Task 7: Standard API Provider Base

Files:

• Create: src/server/services/platforms/standardApiProvider.ts
• Modify: src/server/services/platforms/openai.ts
• Modify: src/server/services/platforms/claude.ts
• Modify: src/server/services/platforms/gemini.ts
• Modify: src/server/services/platforms/cliproxyapi.ts
• Test: src/server/services/platforms/standardApiProvider.test.ts
• Test: src/server/services/platforms/llmUpstream.test.ts

Step 1: Extract shared standard API adapter logic

Centralize base URL normalization, /v1/models resolution, unsupported login/checkin/balance defaults, and common model fetch behavior.

Step 2: Rewire adapters

Make OpenAI, Claude, Gemini, and CLIProxyAPI adapters extend the shared base instead of repeating the same template logic.

Step 3: Verify behavior

Run: npm test -- src/server/services/platforms/standardApiProvider.test.ts src/server/services/platforms/llmUpstream.test.ts Expected: PASS

Task 8: Shared Input File Resolution And Web Helpers

Files:

• Modify: src/server/services/proxyInputFileResolver.ts
• Modify: src/server/services/proxyInputFileResolver.test.ts
• Modify: src/server/proxy-core/surfaces/inputFilesSurface.ts
• Create: src/web/pages/helpers/accountConnection.ts
• Create: src/web/pages/helpers/accountConnection.test.ts
• Modify: src/web/pages/Accounts.tsx
• Modify: src/web/pages/Tokens.tsx
• Modify: src/web/api.ts
• Modify: src/web/api.test.ts

Step 1: Make route-level file inlining reuse the service implementation

Replace the duplicate inputFilesSurface.ts implementation with a re-export of the shared resolver service.

Step 2: Extract shared web account helpers

Move resolveAccountCredentialMode, parsePositiveInt, and isTruthyFlag into a single helper consumed by both Accounts and Tokens.

Step 3: De-duplicate proxy test aliases

Make testProxy / proxyTest and stream variants reuse the same implementation function.

Step 4: Verify behavior

Run: npm test -- src/server/services/proxyInputFileResolver.test.ts src/web/pages/helpers/accountConnection.test.ts src/web/api.test.ts Expected: PASS

Task 9: PR1 Verification And Commit

Files:

• Verify: scripts/dev/copy-runtime-db-generated.ts
• Verify: scripts/dev/copy-runtime-db-generated.test.ts
• Verify: all files touched in Tasks 2-8

Step 1: Run focused regression suite

Run:

npm test -- scripts/dev/copy-runtime-db-generated.test.ts src/server/proxy-core/cliProfiles/codexProfile.test.ts src/server/proxy-core/providers/headerUtils.test.ts src/server/proxy-core/surfaces/sharedSurface.test.ts src/server/routes/api/oauth.test.ts src/server/services/accountMutationWorkflow.test.ts src/server/services/modelService.discovery.test.ts src/server/services/oauth/oauthAccount.test.ts src/server/services/platforms/standardApiProvider.test.ts src/server/services/platforms/llmUpstream.test.ts src/server/services/proxyInputFileResolver.test.ts src/server/transformers/openai/responses/conversion.test.ts src/shared/tokenRouteContract.test.ts src/shared/tokenRoutePatterns.test.ts src/web/api.test.ts src/web/pages/helpers/accountConnection.test.ts

Expected: PASS

Step 2: Run server build

Run: npm run build:server Expected: PASS

Step 3: Commit PR1 consolidation work

Run:

git add docs/plans/2026-03-22-single-source-consolidation-pr1.md scripts/dev/copy-runtime-db-generated.test.ts scripts/dev/copy-runtime-db-generated.ts src/server/proxy-core/cliProfiles/codexProfile.ts src/server/proxy-core/cliProfiles/codexProfile.test.ts src/server/proxy-core/providers/headerUtils.ts src/server/proxy-core/providers/headerUtils.test.ts src/server/proxy-core/providers/claudeProviderProfile.ts src/server/proxy-core/providers/codexProviderProfile.ts src/server/proxy-core/providers/geminiCliProviderProfile.ts src/server/proxy-core/surfaces/chatSurface.ts src/server/proxy-core/surfaces/geminiSurface.ts src/server/proxy-core/surfaces/inputFilesSurface.ts src/server/proxy-core/surfaces/openAiResponsesSurface.ts src/server/proxy-core/surfaces/sharedSurface.ts src/server/proxy-core/surfaces/sharedSurface.test.ts src/server/routes/api/accountTokens.ts src/server/routes/api/accounts.ts src/server/routes/api/oauth.test.ts src/server/routes/api/tokens.ts src/server/routes/proxy/downstreamClientContext.ts src/server/routes/proxy/responsesWebsocket.ts src/server/routes/proxy/upstreamEndpoint.ts src/server/services/accountMutationWorkflow.ts src/server/services/accountMutationWorkflow.test.ts src/server/services/backupService.ts src/server/services/modelService.discovery.test.ts src/server/services/modelService.ts src/server/services/oauth/oauthAccount.ts src/server/services/oauth/oauthAccount.test.ts src/server/services/oauth/quota.ts src/server/services/oauth/service.ts src/server/services/platforms/claude.ts src/server/services/platforms/cliproxyapi.ts src/server/services/platforms/gemini.ts src/server/services/platforms/llmUpstream.test.ts src/server/services/platforms/openai.ts src/server/services/platforms/standardApiProvider.ts src/server/services/platforms/standardApiProvider.test.ts src/server/services/proxyInputFileResolver.ts src/server/services/proxyInputFileResolver.test.ts src/server/services/siteProxy.ts src/server/services/tokenRouter.ts src/server/transformers/anthropic/messages/inbound.ts src/server/transformers/openai/responses/compatibility.ts src/server/transformers/openai/responses/conversion.test.ts src/server/transformers/openai/responses/conversion.ts src/server/transformers/openai/responses/normalization.ts src/shared/tokenRouteContract.d.ts src/shared/tokenRouteContract.js src/shared/tokenRouteContract.test.ts src/shared/tokenRoutePatterns.d.ts src/shared/tokenRoutePatterns.js src/shared/tokenRoutePatterns.test.ts src/web/api.ts src/web/api.test.ts src/web/pages/Accounts.tsx src/web/pages/Settings.tsx src/web/pages/Tokens.tsx src/web/pages/helpers/accountConnection.ts src/web/pages/helpers/accountConnection.test.ts src/web/pages/helpers/routeListVisibility.ts src/web/pages/token-routes/types.ts src/web/pages/token-routes/utils.ts
git commit -m "refactor: consolidate single-source routing and protocol helpers"

Deferred After PR1

Keep out of this PR:

• shared/chatFormatsCore.ts breakup
• Gemini generate-content module boundary cleanup
• schema contract/introspection meta-rule unification
• legacySchemaCompat.ts feature compatibility dedupe
• mobile page scaffold extraction
• large-file decomposition for Settings.tsx, ModelTester.tsx, tokenRouter.ts, modelService.ts