ci: add Codeberg mirror workflow

[thedavidweng]

Mirror to codeberg.org/thedavidweng/money on every push.

[greptile-apps]

Greptile Summary

This PR adds a GitHub Actions workflow that mirrors the repository to Codeberg on every push (all branches and tags) and on manual dispatch.

• The new workflow (mirror.yml) checks out the full history with fetch-depth: 0 and pushes to codeberg.org/thedavidweng/money using a CODEBERG_TOKEN secret, with a 5-minute timeout and minimal contents: read permissions.
• The third-party cssnr/mirror-repository-action is correctly pinned to a full commit SHA (4e3e1a67ee37ac30073df96fe9f53ef7ec4a4f80) with a # v1 comment for human readability.

Confidence Score: 5/5

Safe to merge — the workflow is a straightforward read-only mirror with well-scoped permissions and no changes to application logic.

The change adds a single CI workflow file. Credentials are stored in GitHub Secrets, permissions are limited to contents: read, and the one third-party action is pinned to a full commit SHA. There are no issues that would affect correctness or security.

No files require special attention.

Important Files Changed

Filename	Overview
.github/workflows/mirror.yml	New workflow that mirrors all branches and tags to Codeberg; third-party action is properly SHA-pinned, credentials are handled via secrets, and permissions are scoped to contents: read.

Sequence Diagram

%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
    participant GH as GitHub (push / workflow_dispatch)
    participant Runner as ubuntu-latest runner
    participant Checkout as actions/checkout@v4
    participant Mirror as cssnr/mirror-repository-action@SHA
    participant CB as codeberg.org/thedavidweng/money

    GH->>Runner: trigger (branch push / tag push / manual)
    Runner->>Checkout: fetch-depth: 0 (full history)
    Checkout-->>Runner: local clone ready
    Runner->>Mirror: host, username, CODEBERG_TOKEN
    Mirror->>CB: git push --mirror
    CB-->>Mirror: success
    Mirror-->>Runner: done

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
sequenceDiagram
    participant GH as GitHub (push / workflow_dispatch)
    participant Runner as ubuntu-latest runner
    participant Checkout as actions/checkout@v4
    participant Mirror as cssnr/mirror-repository-action@SHA
    participant CB as codeberg.org/thedavidweng/money

    GH->>Runner: trigger (branch push / tag push / manual)
    Runner->>Checkout: fetch-depth: 0 (full history)
    Checkout-->>Runner: local clone ready
    Runner->>Mirror: host, username, CODEBERG_TOKEN
    Mirror->>CB: git push --mirror
    CB-->>Mirror: success
    Mirror-->>Runner: done

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_{Reviews (2): Last reviewed commit: "fix: pin action SHA, remove test.txt, ad..." | Re-trigger Greptile}