refactor(app): clarify application and binary roles

Rename the application Cargo package from irtt-cli to irtt-rs
(crates/irtt-cli -> crates/irtt-app), and hard-rename its scriptable
client binary from irtt-cli to irtt-client, now that the application
also ships a first-class server and the old name reads as an umbrella
CLI for both roles.

Give each dedicated binary (irtt-client, irtt-tui, irtt-server) its
own entry point instead of funneling through the multicall
dispatcher's argv0/subcommand logic, so a dedicated binary only links
the applet code for the role it implements and always runs that role
regardless of the name it's invoked or copied under. irtt-rs remains
the feature-selectable multicall dispatcher and is now the only binary
that inspects argv0 or subcommands.

Move future application releases to the irtt-rs/vX.Y.Z tag namespace
(regenerated via `dist generate`), and bump the application package to
0.6.0 as a breaking distribution change. Library crate versions are
unaffected.

.github/workflows/actions-security.yml

@@ -42,7 +42,7 @@ jobs:
       - name: actionlint generated release workflow
         uses: raven-actions/actionlint@205b530c5d9fa8f44ae9ed59f341a0db994aa6f8
         with:
-          files: .github/workflows/irtt-cli-release.yml
+          files: .github/workflows/irtt-rs-release.yml
           shellcheck: false
   zizmor:
     name: zizmor

.github/workflows/interop-netem.yml

@@ -46,8 +46,8 @@ jobs:
           go install "github.com/heistp/irtt/cmd/irtt@${IRTT_UPSTREAM_VERSION}"
           "$GOBIN/irtt" version
 
-      - name: Build irtt-rs CLI
-        run: cargo build -p irtt-cli --locked
+      - name: Build irtt-rs client
+        run: cargo build -p irtt-rs --bin irtt-client --locked
 
       - name: Run netem interop comparisons
         run: |
@@ -55,7 +55,7 @@ jobs:
             --all \
             --skip-build \
             --upstream-irtt "$GOBIN/irtt" \
-            --irtt-rs-command "$PWD/target/debug/irtt-cli"
+            --irtt-rs-command "$PWD/target/debug/irtt-client"
 
       - name: Append netem interop summary
         if: always()

.github/workflows/irtt-rs-release.yml

@@ -42,7 +42,7 @@ on:
   pull_request:
   push:
     tags:
-      - 'irtt-cli**[0-9]+.[0-9]+.[0-9]+*'
+      - 'irtt-rs**[0-9]+.[0-9]+.[0-9]+*'
 
 jobs:
   # Run 'dist plan' (or host) to determine what tasks we need to do

.github/workflows/semver.yml

@@ -8,7 +8,7 @@ on:
       - "irtt-client/v*.*.*"
       - "irtt-server/v*.*.*"
       - "irtt-stats/v*.*.*"
-      - "irtt-cli/v*.*.*"
+      - "irtt-rs/v*.*.*"
 
 permissions:
   contents: read

.github/workflows/supply-chain.yml

@@ -75,5 +75,5 @@ jobs:
       - name: actionlint generated release workflow
         uses: raven-actions/actionlint@205b530c5d9fa8f44ae9ed59f341a0db994aa6f8
         with:
-          files: .github/workflows/irtt-cli-release.yml
+          files: .github/workflows/irtt-rs-release.yml
           shellcheck: false