fix(backend): decode percent-encoded characters in generic git URL repo names

[Tyagiquamar]

Fixes #1384.

Direct-URL generic git configs built the repo name from the raw percent-encoded pathname, while the file-based path already decodes it. This reuses the same decodeURIComponent approach so both paths produce consistent names and zoekt metadata.

Verified: added a regression test with a %20 URL. It fails on main (name keeps %20) and passes with this change. Backend vitest suite for repoCompileUtils (15 tests) and tsc build pass in Docker (node:24-bookworm).

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Note

Medium Risk
Changes repository identity strings during connection compile/sync for generic git URLs, which can rename existing indexed repos but is limited to that config path.

Overview
Direct HTTP(S) generic git connection configs now decodeURIComponent the URL pathname when deriving name, displayName, and zoekt.* metadata, matching the existing file-based generic git compile path and Zoekt naming.

Malformed percent-encoding no longer fails the whole compile: the URL is skipped with an INVALID_REPOSITORY_SOURCE discovery issue. A regression test covers %20 in the repo path, and CHANGELOG documents the fix.

Note: repos that were already stored under literal %20 names may rename on the next sync after this change.

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Summary by cubic

Fixes #1384 by decoding percent-encoded characters (like %20) in repo names for direct-URL generic git configs, so they match the file-based path and zoekt metadata. Malformed URL encodings now skip the URL with an INVALID_REPOSITORY_SOURCE discovery issue instead of failing the whole compile.

• Adds a regression test for a %20 URL.
• Adds a CHANGELOG entry.

Existing repos with literal %20 in their names could rename on re-sync.

^{Written for commit 88aec56. Summary will update on new commits.}

Summary by CodeRabbit

• Bug Fixes

  • Repository names from direct generic Git URLs now correctly decode percent-encoded characters, such as spaces.
  • Decoded names are consistently reflected in repository displays and Git metadata.
  • Malformed percent-encoded URLs are skipped with a clear repository source issue instead of causing processing failures.

• Documentation

  • Added an unreleased changelog entry documenting the URL decoding fix.

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Walkthrough

The generic Git URL compiler now decodes percent-encoded repository path characters before creating repository names and metadata. Malformed encodings produce an invalid repository source issue. Tests and the changelog cover the fix.

Changes

Generic Git URL names

Layer / File(s)	Summary
Decode repository path names packages/backend/src/repoCompileUtils.ts, packages/backend/src/repoCompileUtils.test.ts, CHANGELOG.md	The compiler decodes the URL pathname before stripping .git and building repository names. It reports malformed URI decoding as an invalid repository source. The test verifies decoded names and zoekt metadata. The changelog records the fix.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix · Severity of issue fixed: Medium

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: decoding percent-encoded characters in repository names from generic Git URLs.
Linked Issues check	✅ Passed	The changes satisfy #1384. compileGenericGitHostConfig_url decodes remoteUrl.pathname before it derives repoName, then removes the .git suffix. The regression test verifies decoded name, `di…
Out of Scope Changes check	✅ Passed	The source change, regression test, and changelog entry support #1384. The malformed-encoding handling protects the same URL-decoding path. No unrelated change is identified.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…

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[cubic-dev-ai]

All reported issues were addressed across 3 files

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[coderabbitai]

Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
In `@packages/backend/src/repoCompileUtils.ts`:
- Line 729: Update the generic Git path handling around decodedPathname to catch
URIError from decodeURIComponent; report INVALID_REPOSITORY_SOURCE through the
existing repository discovery issue mechanism and return an empty result instead
of allowing the rejection to escape.

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• packages/backend/src/repoCompileUtils.ts

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