chore(skills): remove redundant References sections

skills/code-review/SKILL.md

@@ -26,8 +26,3 @@ description: PR expectations and review checklist for the DataSync AWS S3 asset
 - **Blocker**: broken build, failing tests, secret leak, or breaking change without semver/docs
 - **Major**: missing tests for non-trivial logic, unclear error handling for S3/network failures
 - **Minor**: naming, comment updates, small refactors for readability
-
-## References
-
-- [`../datasync-asset-store-s3/SKILL.md`](../datasync-asset-store-s3/SKILL.md) — API surface
-- [`../testing/SKILL.md`](../testing/SKILL.md) — test expectations

skills/datasync-asset-store-s3/SKILL.md

@@ -37,9 +37,3 @@ description: Public API, S3 asset store class, configuration, and DataSync Manag
 ### Versioning
 
 - Follow semver for npm releases; breaking changes to `start`’s resolved object or config contract need a major bump and README/changelog updates
-
-## References
-
-- [`../typescript-style/SKILL.md`](../typescript-style/SKILL.md) — TypeScript layout
-- [`../framework/SKILL.md`](../framework/SKILL.md) — AWS SDK and S3 specifics
-- [`README.md`](../../README.md) — end-user configuration tables

skills/dev-workflow/SKILL.md

@@ -37,9 +37,3 @@ description: Branches, local commands, Husky pre-commit (Talisman/Snyk), and Git
 
 - Use feature branches; target the repo’s default branch per team process (not hard-coded here)
 - Keep changes scoped; this package is consumed by DataSync Manager—avoid breaking the exported `start` / asset store contract without coordination
-
-## References
-
-- [`../datasync-asset-store-s3/SKILL.md`](../datasync-asset-store-s3/SKILL.md) — public API and integration
-- [`../testing/SKILL.md`](../testing/SKILL.md) — Jest and coverage
-- [DataSync Manager](https://github.com/contentstack/datasync-manager) — consumer integration

skills/framework/SKILL.md

@@ -15,7 +15,7 @@ description: AWS SDK v2, S3 usage, streaming uploads, and runtime assumptions fo
 
 ### AWS SDK
 
-- Library uses **`aws-sdk`** v2 (not AWS SDK for JavaScript v3 modular clients)
+- Library uses **`aws-sdk`** v2 (not AWS SDK for JavaScript v3 modular clients); class reference: [AWS.S3](https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/S3.html)
 - S3 client is constructed in [`src/setup.ts`](../../src/setup.ts) and injected into [`S3`](../../src/s3.ts)
 
 ### Streaming and HTTP
@@ -30,8 +30,3 @@ description: AWS SDK v2, S3 usage, streaming uploads, and runtime assumptions fo
 ### Node.js
 
 - Target runtime is **Node >= 22** per `engines`; avoid APIs that require newer Node unless `engines` and docs are updated together
-
-## References
-
-- [`../datasync-asset-store-s3/SKILL.md`](../datasync-asset-store-s3/SKILL.md) — config and public API
-- [AWS SDK for JavaScript v2 — S3](https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/S3.html)

skills/testing/SKILL.md

@@ -37,8 +37,3 @@ description: Jest + ts-jest setup, test file locations, coverage, and safe handl
 ### Coverage
 
 - Reports: `coverage/` (JSON + HTML per Jest config); ensure new code paths are covered when fixing bugs or adding behavior
-
-## References
-
-- [`../dev-workflow/SKILL.md`](../dev-workflow/SKILL.md) — `npm test` in local workflow
-- [`../framework/SKILL.md`](../framework/SKILL.md) — AWS S3 behavior under test

skills/typescript-style/SKILL.md

@@ -28,8 +28,3 @@ description: TypeScript compiler settings, source layout, and conventions for sr
 
 - TSLint is the configured linter (`tslint.json`); run `npm run tslint` before merge
 - Prefer existing patterns: class `S3` with public methods, small `util/` helpers, `debug` namespaces per file
-
-## References
-
-- [`../datasync-asset-store-s3/SKILL.md`](../datasync-asset-store-s3/SKILL.md) — exported API surface
-- [`../dev-workflow/SKILL.md`](../dev-workflow/SKILL.md) — build commands