Ubisam-MobileGit/tasks/006-code-browser.md

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# TASK-006: Browse trees and source code by ref
Status: planned — depends on TASK-005
Owner: Claude
Reviewer: Codex
## Outcome
A user can navigate directories and view source files at an explicit branch, tag, or commit without silently changing refs.
## Writable paths
- `app/src/main/java/com/ubisam/ubgitea/feature/codebrowser/`
- `app/src/test/java/com/ubisam/ubgitea/feature/codebrowser/`
- `app/src/main/res/values/strings_codebrowser.xml`
- TASK-006 evidence only
Shared domain, data, Gradle, manifest, and navigation changes must be requested from Codex instead of edited by Claude.
## Acceptance criteria
- [ ] Repository, selected ref, and current path remain visible.
- [ ] Directory navigation is deterministic and safely handles encoded names.
- [ ] Text files render with bounded memory use and copy support.
- [ ] Binary, Git LFS, submodule, unsupported encoding, and oversized-file states have explicit fallbacks.
- [ ] Loading, empty, offline, authentication-expired, not-found, and server-error states are localized and accessible.
- [ ] Tests cover ref preservation, path navigation, content classification, and size limits.
- [ ] Resource names use the `codebrowser_` prefix.
- [ ] Evidence records the exact reviewed TASK-005 contract-freeze commit.