Add Claude Code GitHub Workflow

[quinnjr]

🤖 Installing Claude Code GitHub App

This PR adds a GitHub Actions workflow that enables Claude Code integration in our repository.

What is Claude Code?

Claude Code is an AI coding agent that can help with:

• Bug fixes and improvements
• Documentation updates
• Implementing new features
• Code reviews and suggestions
• Writing tests
• And more!

How it works

Once this PR is merged, we'll be able to interact with Claude by mentioning @clhi, thank you for developing this project!

I encountered some compilation issues when building the abp crate for Android targets. After investigation I found the root cause and would like to share for your reference.

Problem

When compiling crates/abp for Android targets using cargo-ndk, there are 16 type mismatch errors. The root cause is that Android Bionic's libc::c_char is u8, while io.rs hardcodes as *const i8. Similarly, st_mode and S_IFMT constants have different widths on Android compared to Linux glibc.

My environment

rustc:           1.96.0 (ac68faa20 2026-05-25)
cargo-ndk:       4.1.2
Android NDK:     r30 (30.0.14904198)
host:            macOS (Darwin 25.5.0, aarch64)
libc crate:      0.2.178
targets tested:  aarch64-linux-android, armv7-linux-androideabi

Build commands

cargo ndk -t arm64-v8a build --release -p abp
cargo ndk -t armeabi-v7a build --release -p abp

Error output

error[E0308]: mismatched types
   --> crates/abp/src/io.rs:101:25
    |
101 |     unsafe { libc::open(path_buf.as_ptr() as *const i8, flags, mode) }
    |              ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `*const u8`, found `*const i8`

There are 10 similar errors in io.rs (open, stat, mkdir, rmdir, unlink, rename, symlink, chmod, access, opendir). Additionally, remove.rs:143 and verify.rs:239 have type mismatches in bitwise operations between st_mode and S_IFMT.

My workaround

I made the following changes locally, and both arm64 and arm32 targets now compile successfully. The binaries were verified to run correctly on an Android device:

crates/abp/src/io.rs — Replace as *const i8 with as *const libc::c_char (10 places). This is compatible with both c_char = i8 (glibc/musl) and c_char = u8 (Bionic):

// before
unsafe { libc::open(path_buf.as_ptr() as *const i8, flags, mode) }
// after
unsafe { libc::open(path_buf.as_ptr() as *const libc::c_char, flags, mode) }

crates/abp/src/remove.rs:143 and crates/abp/src/verify.rs:239 — Add as u32 casts to st_mode and S_IFMT constants:

// before
if (stat_buf.st_mode & libc::S_IFMT) == libc::S_IFDIR {
// after
if (stat_buf.st_mode as u32 & libc::S_IFMT as u32) == libc::S_IFDIR as u32 {

Build verification

Build results after the fix:

dist/abpd-gen-arm64  288K  ELF 64-bit LSB pie executable, ARM aarch64, stripped
dist/abpd-gen-arm32  215K  ELF 32-bit LSB pie executable, ARM, EABI5, stripped

Device runtime test (arm64 emulator):

$ adb shell /data/local/tmp/abpd-gen
ABPD

I'm not sure if this is a known issue or if there's a better approach (e.g., conditional compilation for Android in the build pipeline). Happy to submit a PR i

fix-android-cross-compile.patch

f that would be helpful. Thanks!aude in a pull request or issue comment.
Once the workflow is triggered, Claude will analyze the comment and surrounding context, and execute on the request in a GitHub action.

Important Notes

• This workflow won't take effect until this PR is merged
• @claude mentions won't work until after the merge is complete
• The workflow runs automatically whenever Claude is mentioned in PR or issue comments
• Claude gets access to the entire PR or issue context including files, diffs, and previous comments

Security

• Our Anthropic API key is securely stored as a GitHub Actions secret
• Only users with write access to the repository can trigger the workflow
• All Claude runs are stored in the GitHub Actions run history
• Claude's default tools are limited to reading/writing files and interacting with our repo by creating comments, branches, and commits.
• We can add more allowed tools by adding them to the workflow file like:

allowed_tools: Bash(npm install),Bash(npm run build),Bash(npm run lint),Bash(npm run test)

There's more information in the Claude Code action repo.

After merging this PR, let's try mentioning @claude in a comment on any PR to get started!