ci: unified workflow (lint + typecheck + build + rust)

[kyscott18]

Replacement for #100, which GitHub marked as merged into a non-main branch before the changes landed on main.

This PR is stacked on #109 because it introduces the Rust clippy CI job, which requires the clippy fixes from #109 to pass. The diff remains focused on the original CI workflow changes.

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Project	Deployment	Actions	Updated (UTC)
monode	Ready	Preview, Comment	Jun 11, 2026 4:04pm

[greptile-apps]

Greptile Summary

This PR consolidates several previously separate (or absent) CI workflows into a single ci.yml that runs on pull_request, push to main, and workflow_dispatch. It also adds a typecheck script to frontend/package.json so the new typecheck job can invoke tsc --noEmit.

• Lint job is a direct migration from the deleted lint.yml, now with broader triggers (push to main + manual dispatch added).
• Typecheck + Build jobs are newly introduced, each doing their own pnpm install and running independently in parallel — no shared artifact between them, which is a trade-off of simplicity over speed.
• Rust job runs inside rust:1.91-slim (matching the backend Dockerfile) and gates on cargo fmt, cargo clippy -D warnings, and cargo build.

Confidence Score: 5/5

Safe to merge — this is a straightforward CI consolidation with no changes to application logic.

All four jobs are additive or direct migrations of existing checks. The lint job is a verbatim move from the deleted lint.yml with broadened triggers. The typecheck and build jobs are independent and correct. The Rust job properly installs git before checkout, runs inside the matching container image, and uses a pinned Rust version consistent with the backend Dockerfile comment.

No files require special attention.

Important Files Changed

Filename	Overview
.github/workflows/ci.yml	New unified CI workflow consolidating lint, typecheck, build, and Rust jobs; all four jobs run in parallel on pull_request, push to main, and workflow_dispatch
.github/workflows/lint.yml	Deleted — lint job migrated verbatim into ci.yml with an expanded trigger set (push to main, workflow_dispatch added)
frontend/package.json	Adds typecheck script (tsc --noEmit) consumed by the new typecheck CI job; typescript is already in devDependencies

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    trigger["Trigger\n(PR / push main / workflow_dispatch)"]

    trigger --> lint
    trigger --> typecheck
    trigger --> build
    trigger --> rust

    subgraph lint["lint (ubuntu-latest)"]
        L1[Checkout] --> L2[Cache Biome]
        L2 --> L3[Setup Biome 2.1.2]
        L3 --> L4[biome ci]
    end

    subgraph typecheck["typecheck (ubuntu-latest)"]
        T1[Checkout] --> T2[pnpm setup]
        T2 --> T3[pnpm install]
        T3 --> T4["pnpm typecheck\ntsc --noEmit"]
    end

    subgraph build["build (ubuntu-latest)"]
        B1[Checkout] --> B2[pnpm setup]
        B2 --> B3[pnpm install]
        B3 --> B4["pnpm build\nnext build"]
    end

    subgraph rust["rust (rust:1.91-slim container)"]
        R1[apt-get install deps] --> R2[Checkout]
        R2 --> R3[rustup add rustfmt+clippy]
        R3 --> R4[rust-cache]
        R4 --> R5[cargo fmt --check]
        R5 --> R6["cargo clippy\n--all-targets --all-features\n-D warnings"]
        R6 --> R7["cargo build\n--all-targets"]
    end

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_{Reviews (2): Last reviewed commit: "Merge branch 'main' into reopen/100-unif..." | Re-trigger Greptile}