feat: add sidebar panel, i18n, token validation, and UX improvements

[Ebola-Chan-bot]

• Add sidebar.js: full actionable sidebar panel with 6 GitHub operations (Open Repo, Open Gist, Delete Gist, Delete Gist File, Update Token, Clear Cache)
• Add Chinese/English i18n based on device locale detection (navigator.languages)
• Token handling: normalize input (strip Bearer/token prefix, trim whitespace), validate format, and immediately verify against GitHub /user API on save
• Enhanced API error messages: include GitHub's response message and documentation URL
• Fix stale gh:// filesystem handlers from old plugin instances via global registry pattern (window.acodeGithubFsTests) for proper cleanup across plugin reloads
• Prefetch repos/branches before opening palette to avoid misleading empty results
• Show toast after opening repo folder guiding user to check file browser sidebar
• Pass listFiles:false to openFolder to skip 'list all files may crash' prompt
• Localize all user-facing strings: tutorial, commands, dialogs, toasts, settings
• Update .gitignore to exclude pem files, debug server, and package-lock.json

[Copilot]

Pull request overview

This PR adds a GitHub sidebar panel and expands localization/UX around repository and gist workflows, while also improving token handling and GitHub API error reporting.

Changes:

• Introduces a new sidebar panel (src/sidebar.js) with buttons for common GitHub operations (repos, gists, token, cache).
• Adds Chinese/English localization for many user-facing strings and improves UX (prefetch repos/branches, additional toasts, openFolder({ listFiles:false })).
• Improves token normalization/validation and enhances GitHub API error messages with GitHub-provided details and docs URL.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/sidebar.js	Adds a sidebar UI with actionable GitHub operations and basic busy/error handling.
src/main.js	Integrates sidebar, adds i18n helper, token normalization/validation, caching/UX improvements.
src/githubFs.js	Adds a global registry cleanup to remove stale gh:// handlers across reloads and localizes commit prompt strings.
src/GitHubAPI/Requestable.js	Normalizes token input and improves Axios error message detail formatting.
.gitignore	Ignores additional local/dev artifacts (pem, debug server, package-lock).

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[greptile-apps]

Greptile Summary

This PR adds significant UX improvements including a sidebar panel, bilingual i18n (Chinese/English), and robust token handling. The implementation introduces 6 actionable GitHub operations via sidebar, fixes plugin hot-reload issues with a global registry pattern, and validates tokens against the GitHub API.

Key Changes:

• Sidebar panel provides direct access to repo/gist operations without command palette
• Comprehensive i18n based on navigator.languages detection
• Token normalization strips Bearer/token prefixes and validates format
• Prefetches repos/branches to avoid empty palette results
• Enhanced API error messages include GitHub response details and documentation URLs
• Global registry pattern (window.__acodeGithubFsTests__) prevents stale filesystem handlers across plugin reloads

Issue Found:

• Token is saved to localStorage before GitHub API validation completes, which could persist invalid tokens and cause repeated failures on app restart

Confidence Score: 3/5

• This PR is mostly safe but contains one logic issue with token persistence timing that should be fixed before merge
• Score reflects substantial feature additions with generally solid implementation, but the token save-before-validate bug in updateToken() could cause user-facing issues. The rest of the code demonstrates good practices: XSS prevention via escaping, proper error handling, and thoughtful UX improvements. Once the localStorage timing issue is resolved, this would be a 4/5.
• Pay close attention to src/main.js lines 407-419 where token is saved before validation

Important Files Changed

Filename	Overview
.gitignore	Added entries for pem files, debug-server.js, and package-lock.json - standard gitignore additions with no issues
src/GitHubAPI/Requestable.js	Added token normalization (strips Bearer/token prefixes) and enhanced error messages with GitHub API response details - improves UX and token handling robustness
src/githubFs.js	Implemented global registry pattern to fix stale filesystem handlers across plugin reloads, added Chinese/English i18n for commit messages - solid implementation of hot-reload fix
src/main.js	Major feature additions: sidebar integration, comprehensive i18n, prefetching, token validation - contains one critical issue with token save timing before validation
src/sidebar.js	New sidebar UI with 6 GitHub operations, full i18n support, proper busy state handling - well-structured implementation with XSS prevention via esc() function

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[User Clicks Update Token] --> B[Show Token Input Prompt]
    B --> C{User Enters Token}
    C -->|Cancel| D[Exit]
    C -->|Submit| E[Normalize Token]
    E --> F[Strip Bearer/token prefix]
    F --> G[Trim whitespace]
    G --> H{Validate Format}
    H -->|Invalid Regex| I[Show Error Toast]
    I --> D
    H -->|Valid| J[Save to this.token]
    J --> K[Reset FS Initialized]
    K --> L[Save to localStorage]
    L --> M[Init FS]
    M --> N[Create GitHub API Client]
    N --> O[Call /user API]
    O -->|Success| P[Token Valid - Complete]
    O -->|Fail| Q[Show Validation Error]
    Q --> R[Throw Error]
    
    style L fill:#ffcccc
    style O fill:#ccffcc
    style Q fill:#ffcccc

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_{Last reviewed commit: 7b8ec0f}

[greptile-apps]

_{5 files reviewed, 1 comment}

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