Add GitHub issue creation endpoint via REST POST with dynamic auth token handling

[Copilot]

This PR adds backend support for creating GitHub issues through the GitHub REST API (POST /repos/{owner}/{repo}/issues) and addresses the prerequisite for dynamic token handling in POST calls. It extends the existing read-only issue integration with a write path while preserving existing URL safety checks.

• API surface: add create-issue endpoint

  • Added POST /api/create-repo-issue/{username}/{repository}/ in GitProjectsController.
  • Added request validation for path params and required issue title.
  • Maps create request payload into the existing issue response shape.

• Service layer: orchestrate issue creation

  • Added createIssue(userId, repo, requestBody) to GitDetails/GitDetailsService.
  • Reuses configured GitHub issues endpoint template and URI expansion.
  • Introduced named constants for pagination placeholders used by endpoint expansion.

• GitHub client: implement POST call

  • Added createGitHubIssue(...) to Client/GitClient.
  • Sends GitHub-required headers for issue creation:
    • Accept: application/vnd.github+json
    • X-GitHub-Api-Version: 2022-11-28
    • Content-Type: application/json
  • Serializes request payload and deserializes created issue response.

• Auth and outbound hardening

  • Normalized Authorization header construction to support raw tokens and already-prefixed bearer tokens.
  • Tightened connection URL validation (protocol/host/port match) before opening outbound connection.

• Data model additions

  • Added RepositoryIssueCreateDomain and RepositoryIssueCreateDto with support for:
    • title, body, assignees, milestone, labels

@PostMapping(value = {"/create-repo-issue/{username}/{repository}/"},
        consumes = MediaType.APPLICATION_JSON_VALUE,
        produces = MediaType.APPLICATION_JSON_VALUE)
public ResponseEntity<RepositoryIssueDomain> createIssueByUsernameAndRepoPathVars(
        HttpServletRequest request,
        @PathVariable("username") String username,
        @PathVariable("repository") String repository,
        @RequestBody RepositoryIssueCreateDomain issue) {
    return createIssueByUsernameAndRepo(request, username, repository, issue);
}

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• ads.mozilla.org
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette -headless -no-remote -profile /tmp/rust_mozprofileADoJkb (dns block)
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofile7wbbDC (dns block)
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofileTWSiKv (dns block)
• detectportal.firefox.com
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette -headless -no-remote -profile /tmp/rust_mozprofileADoJkb (dns block)
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofile7wbbDC (dns block)
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofileTWSiKv (dns block)
• firefox.settings.services.mozilla.com
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette -headless -no-remote -profile /tmp/rust_mozprofileADoJkb (dns block)
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofile7wbbDC (dns block)
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofileTWSiKv (dns block)
• ironoc.net
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette -headless -no-remote -profile /tmp/rust_mozprofileADoJkb (dns block)
• support.mozilla.org
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofile7wbbDC (dns block)
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette --headless --disable-gpu --window-size=1920,1080 -no-remote -profile /tmp/rust_mozprofileTWSiKv (dns block)
• www.ironoc.net
  • Triggering command: /usr/lib/firefox/firefox /usr/lib/firefox/firefox --marionette -headless -no-remote -profile /tmp/rust_mozprofileADoJkb (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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[conorheffron]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Conflicts are resolved on this branch. It is up to date with origin/main (git merge origin/main reports "Already up to date") and the merge-resolution commit is ac35606.