chore: integrate Claude Code

.claude/CLAUDE.md

@@ -0,0 +1,47 @@
+Rust
+====
+
+After changing Rust code (`*.rs`) first format the code using `cargo fmt`.
+
+Then check the code for linting errors using:
+
+```
+cargo clippy --all-features --workspace --all-targets -- \
+    -D warnings \
+    -D clippy::all \
+    -D clippy::mem_forget \
+    -C debug-assertions=off \
+    -A clippy::uninlined_format_args
+```
+
+Fix any linting errors before continuing with building and testing.
+
+
+Building
+--------
+
+Rust code is built using both `cargo build` and Bazel.
+
+After changing a package under `rs/$PACKAGE` run `bazel build //rs/$PACKAGE`.
+
+
+Changing crate dependencies
+---------------------------
+
+If crate dependencies need to be changed or added:
+
+1. First modify the `Cargo.toml` local to the package.
+2. If a crate is used by multiple packages add it to the workspace `Cargo.toml` in the root of the repo and reference it in the `Cargo.toml` local to the package using `{ workspace = true }`.
+3. Add the crate to `bazel/rust.MODULE.bazel`.
+4. Run a `cargo check` such that the `Cargo.lock` files get updated.
+5. Run `bin/bazel-pin.sh --force` to sync `Cargo.lock` with `Cargo.Bazel.json.lock`.
+
+
+Testing
+=======
+
+After code can be built it needs to be tested.
+
+After changing a package under `rs/$PACKAGE` run `bazel test //rs/$PACKAGE`.
+
+Tests under `rs/tests` which are defined using the `system_test` bazel macro are end-to-end tests which are called system-tests. These tests are comprehensive but also slow and harder to debug. So run them last or wait for GitHub Actions to run them on your Pull Request.

.claude/README.md

@@ -0,0 +1,23 @@
+Claude Code
+===========
+
+You can you use Claude Code either from the:
+
+* [Claude Code VS Code Extension](https://code.claude.com/docs/en/vs-code).
+
+* CLI using the [`claude`](https://code.claude.com/docs/en/cli-reference) command which will be installed in the dev container later.
+
+Login
+-----
+
+Ask #help-it to generate an Anthropic API key for you. Then:
+
+* Select `2. Anthropic Console account · API usage billing`.
+
+* Open the OAuth link in your browser.
+
+* Choose the `DFINITY` organization.
+
+* Authorize Claude Code to connect to your Anthropic organization DFINITY
+
+* Press Enter to continue

.github/CODEOWNERS

@@ -35,6 +35,8 @@ go.sum                    @dfinity/idx
 # [DevEnv]
 .vscode/                  @dfinity/idx
 
+.claude/                  @dfinity/idx
+
 # [Publishing-Artifacts]
 /publish/ @dfinity/idx
 

.gitignore

@@ -138,3 +138,6 @@ test_tmpdir/**
 
 # Bare metal deployment secrets files
 zh2-dll01.csv
+
+# Claude Code settings
+.claude/settings.local.json