Keep Rust formatting checks aligned with the workspace manifest

Constraint: rs/Cargo.toml is a virtual workspace manifest, so cargo fmt --manifest-path rs/Cargo.toml --check fails before rustfmt reaches member crates.

Rejected: formatting individual crate manifests | duplicates workspace membership and lets future crates escape CI.

Confidence: high

Scope-risk: narrow

Directive: Keep the workflow, AGENTS.md, and PR template cargo fmt command in sync.

Tested: git diff --check; bash AGENTS-release-check.sh; npm_config_cache=/tmp/npm-cache npx --yes markdown-link-check CHANGELOG.md --config .github/markdown-link-check-config.json -q; GitHub run 26217931032 showed markdown link-check success and cargo fmt failed with Failed to find targets.

Not-tested: Local cargo fmt/clippy/tests; cargo is not installed in this environment.

Author: NagyVikt

.github/PULL_REQUEST_TEMPLATE.md

@@ -19,7 +19,7 @@ See AGENTS.md for the full contributor + release workflow.
 
 - [ ] Bash syntax + shellcheck pass through the `Lint` workflow
 - [ ] `cargo build --release --locked --manifest-path rs/Cargo.toml` passes (if any Rust changed)
-- [ ] `cargo fmt --manifest-path rs/Cargo.toml --check` passes (if any Rust changed)
+- [ ] `cargo fmt --manifest-path rs/Cargo.toml --all --check` passes (if any Rust changed)
 - [ ] `cargo clippy --release --locked --manifest-path rs/Cargo.toml -- -D warnings` passes (if any Rust changed)
 - [ ] `flashpaste-doctor` runs clean against the changes
 - [ ] If this is a `vX.Y` bump: tag pushed in the same turn (see [AGENTS.md](../AGENTS.md))

.github/workflows/lint.yml

@@ -94,7 +94,7 @@ jobs:
             ${{ runner.os }}-cargo-
 
       - name: cargo fmt
-        run: cargo fmt --manifest-path rs/Cargo.toml --check
+        run: cargo fmt --manifest-path rs/Cargo.toml --all --check
 
       - name: cargo clippy
         run: cargo clippy --release --locked --manifest-path rs/Cargo.toml -- -D warnings

AGENTS.md

@@ -126,7 +126,7 @@ bash -n bin/*.sh install.sh bootstrap.sh
 
 # Rust workspace
 cargo build --release --manifest-path rs/Cargo.toml
-cargo fmt --manifest-path rs/Cargo.toml --check
+cargo fmt --manifest-path rs/Cargo.toml --all --check
 cargo clippy --release --manifest-path rs/Cargo.toml -- -D warnings
 
 # Doctor