ci: add integration tests for pmonitor

Adds automated testing of common use cases for the `pmonitor` FVK
audit tool. The cargo tests are adapted from a one-off bash script
written to aid in review of the original pmonitor PR.

ci: add pmonitor integration workflow

ci: adjust smoke concurrency

ci: load rust cache

.github/workflows/smoke.yml

@@ -5,12 +5,13 @@ on:
     paths-ignore:
       - 'docs/**'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   smoke_test:
     runs-on: buildjet-16vcpu-ubuntu-2204
-    concurrency:
-      group: ${{ github.workflow }}-${{ github.ref }}
-      cancel-in-progress: true
     environment: smoke-test
     steps:
       - uses: actions/checkout@v4
@@ -39,3 +40,30 @@ jobs:
       - name: Display smoke-test logs
         if: always()
         run: cat deployments/logs/smoke-*.log
+
+  pmonitor-integration:
+    runs-on: buildjet-16vcpu-ubuntu-2204
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          lfs: true
+
+      - name: install nix
+        uses: nixbuild/nix-quick-install-action@v28
+
+      - name: setup nix cache
+        uses: nix-community/cache-nix-action@v5
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix') }}
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+          backend: buildjet
+
+      - name: Load rust cache
+        uses: astriaorg/[email protected]
+
+      # Confirm that the nix devshell is buildable and runs at all.
+      - name: validate nix env
+        run: nix develop --command echo hello
+
+      - name: run the pmonitor integration tests
+        run: nix develop --command just test-pmonitor

crates/bin/pmonitor/Cargo.toml

@@ -18,7 +18,7 @@ colored = "2.1.0"
 directories = {workspace = true}
 futures = {workspace = true}
 indicatif = {workspace = true}
-pcli = { path = "../pcli" }
+pcli = {path = "../pcli", default-features = true}
 penumbra-app = {workspace = true}
 penumbra-asset = {workspace = true, default-features = false}
 penumbra-compact-block = {workspace = true, default-features = false}
@@ -39,3 +39,8 @@ tracing = {workspace = true}
 tracing-subscriber = { workspace = true, features = ["env-filter", "ansi"] }
 url = {workspace = true, features = ["serde"]}
 uuid = { version = "1.3", features = ["v4", "serde"] }
+
+[dev-dependencies]
+assert_cmd = {workspace = true}
+once_cell = {workspace = true}
+tempfile = {workspace = true}