fix(sites): serve /dir/index.html for extensionless paths in the router

[jamie-at-bunny]

No description provided.

[bogdan-at-bunny]

@codex review

[changeset-bot]

🦋 Changeset detected

Latest commit: 3179860

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@bunny.net/cli	Patch
@bunny.net/cli-linux-x64	Patch
@bunny.net/cli-linux-arm64	Patch
@bunny.net/cli-darwin-x64	Patch
@bunny.net/cli-darwin-arm64	Patch
@bunny.net/cli-windows-x64	Patch

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[greptile-apps]

Greptile Summary

The router now preserves exact extensionless objects while resolving slashless directory paths through an index probe.

• Adds an internal retry header for slashless GET and HEAD requests.
• On an exact-path 404, probes the slash-terminated URL and redirects when its directory index exists.
• Replaces mirrored test logic with helpers extracted from the shipped router source.
• Adds a patch changeset and updates repository documentation.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; the current code resolves exact extensionless objects before probing directory indexes, handles dotted directory segments without a filename heuristic, and the tests now execute helpers extracted from the shipped router source.

Important Files Changed

Filename	Overview
packages/cli/src/commands/sites/router/source.ts	Replaces the dot-based path heuristic with exact-object-first directory probing, resolving both previously reported routing cases.
packages/cli/src/commands/sites/router/source.test.ts	Exercises helper implementations extracted from the shipped router source, eliminating the previously reported duplicated test logic.
.changeset/sites-router-extensionless-index.md	Records the router correction as a CLI patch release.
AGENTS.md	Documents the exact-lookup-first routing and slash-redirect behavior.

Sequence Diagram

sequenceDiagram
  participant Client
  participant Router
  participant Origin
  Client->>Router: GET /blog
  Router->>Origin: Exact deployment path
  Origin-->>Router: 404
  Router->>Origin: HEAD /blog/
  Origin-->>Router: 200
  Router-->>Client: 301 Location: /blog/
  Client->>Router: GET /blog/
  Router->>Origin: Deployment path/index.html
  Origin-->>Router: Directory index
  Router-->>Client: 200

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_{Reviews (3): Last reviewed commit: "fix directory paths" | Re-trigger Greptile}

[chatgpt-codex-connector]

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