Sync AWS PRs and add coding guidelines

[conico974]

This update ports several PRs from the OpenNextJS AWS repository and introduces SKILL.md for porting guidelines and AGENTS.md for coding standards. The changes enhance functionality and maintainability across the codebase.

[pkg-pr-new]

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npm i https://pkg.pr.new/@opennextjs/cloudflare@25

npm i https://pkg.pr.new/@opennextjs/aws@25

commit: fa26619

[Copilot]

Pull request overview

Ports functionality and build/test improvements from the OpenNextJS AWS repository into this monorepo, and adds contributor guidance docs for porting PRs and coding standards.

Changes:

• Preserve query parameters during i18n root-locale redirects (with trailingSlash support).
• Extend incremental cache support for Next 15+ app pages (segmentData + postponed) and add related typings/tests.
• Improve build tooling: robust Next config discovery, Next server patch to avoid pulling sharp, and safer traced-file copying (writable perms + platform-binary filtering).

Reviewed changes

Copilot reviewed 18 out of 19 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
packages/open-next/src/core/routing/i18n/index.ts	Updates locale redirect URL construction to preserve query params and handle trailingSlash.
packages/tests-unit/tests/core/routing/i18n.test.ts	Adds coverage for locale redirects preserving query params (incl. trailingSlash).
packages/open-next/src/adapters/cache.ts	Writes APP_PAGE cache entries including segmentData/postponed for Next 15+.
packages/open-next/src/types/cache.ts	Adds segmentData?: Map<string, Buffer> to APP_PAGE cache type.
packages/tests-unit/tests/adapters/cache.test.ts	Adds tests for APP_PAGE segmentData/postponed round-tripping.
packages/open-next/src/build/helper.ts	Adds findNextConfig helper to locate Next config and detect TS.
packages/tests-unit/tests/build/helper.test.ts	Adds unit tests for findNextConfig.
packages/open-next/src/build/patch/patches/patchOriginalNextConfig.ts	Uses findNextConfig for importing/compiling Next config.
packages/open-next/src/build/patch/patches/patchNextServer.ts	Adds AST patch rule to no-op handleNextImageRequest to avoid sharp.
packages/tests-unit/tests/build/patch/patches/patchNextServer.test.ts	Adds snapshot coverage for the new Next server patch rule.
packages/open-next/src/build/copyTracedFiles.ts	Ensures copied files are writable; filters non-Linux platform binaries; exports helper predicate.
packages/tests-unit/tests/build/copyTracedFiles.test.ts	Adds tests for non-Linux platform package detection.
packages/open-next/package.json	Updates @ast-grep/napi and AWS SDK dependencies.
packages/cloudflare/package.json	Updates @ast-grep/napi version.
AGENTS.md	Adds repository coding standards and command guidance for agents.
.claude/skills/port-pr/SKILL.md	Adds a documented workflow for porting PRs (skill definition).
.changeset/stale-schools-beam.md	Adds changeset entry for findNextConfig change.
.changeset/port-pr-1098.md	Adds changeset entry for the ported PR.

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[james-elicx]

agent/skill files look good. worth applying the inline suggestions copilot gave though (the quotes comment).

had a quick skim through the ported prs but not dived in deep since it's a lift and a shift.