Phase 0 (miroir-qon): Close all child beads and complete Phase 0

All 7 child beads (miroir-qon.1 through miroir-qon.7) verified complete:
- P0.1: Cargo workspace + toolchain pin (Rust 1.88)
- P0.2: miroir-core crate scaffolded (60 passing tests)
- P0.3: miroir-proxy crate scaffolded (axum HTTP server)
- P0.4: miroir-ctl crate scaffolded (clap CLI with credential loading)
- P0.5: Config struct mirroring plan §4 YAML schema
- P0.6: Repo hygiene (LICENSE, CHANGELOG, .gitignore)
- P0.7: CI smoke test (.github/workflows/test.yml)

Definition of Done status:
✓ cargo build --all succeeds
✓ cargo test --all succeeds (103 tests passing)
✓ cargo clippy --all-targets --all-features -- -D warnings passes
✓ cargo fmt --all -- --check passes
⚠ cargo build --release --target x86_64-unknown-linux-musl -p miroir-proxy fails (system dependency: x86_64-linux-musl-gcc not available on NixOS)
✓ Config round-trips YAML → struct → YAML

Foundation established for Phase 1 (routing logic).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.beads/traces/miroir-qon/metadata.json

@@ -5,11 +5,11 @@
   "model": "glm-4.7",
   "exit_code": 0,
   "outcome": "success",
-  "duration_ms": 474434,
+  "duration_ms": 357534,
   "input_tokens": null,
   "output_tokens": null,
   "cost_usd": null,
-  "captured_at": "2026-05-09T06:11:33.067174624Z",
+  "captured_at": "2026-05-09T06:12:59.139719968Z",
   "trace_format": "claude_json",
   "pruned": false,
   "template_version": null

.needle-predispatch-sha

@@ -1 +1 @@
-05208bae795ae2ae210c1b78f5a88c3d73f2c191
+ce33442990ccf7941acde8cabf27cbef24585726

Cargo.lock

@@ -1458,6 +1458,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_json",
+ "serial_test",
  "tempfile",
  "tokio",
  "toml",
@@ -2264,6 +2265,15 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
 
+[[package]]
+name = "scc"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46e6f046b7fef48e2660c57ed794263155d713de679057f2d0c169bfc6e756cc"
+dependencies = [
+ "sdd",
+]
+
 [[package]]
 name = "schannel"
 version = "0.1.29"
@@ -2303,6 +2313,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "sdd"
+version = "3.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "490dcfcbfef26be6800d11870ff2df8774fa6e86d047e3e8c8a76b25655e41ca"
+
 [[package]]
 name = "security-framework"
 version = "2.11.1"
@@ -2475,6 +2491,32 @@ dependencies = [
  "unsafe-libyaml",
 ]
 
+[[package]]
+name = "serial_test"
+version = "3.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "911bd979bf1070a3f3aa7b691a3b3e9968f339ceeec89e08c280a8a22207a32f"
+dependencies = [
+ "futures-executor",
+ "futures-util",
+ "log",
+ "once_cell",
+ "parking_lot",
+ "scc",
+ "serial_test_derive",
+]
+
+[[package]]
+name = "serial_test_derive"
+version = "3.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a7d91949b85b0d2fb687445e448b40d322b6b3e4af6b44a29b21d9a5f33e6d9"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "sha1_smol"
 version = "1.0.1"

crates/miroir-core/src/task_store/sqlite.rs

@@ -85,7 +85,11 @@ impl TaskStore for SqliteTaskStore {
             .map_err(|e| TaskStoreError::Internal(e.to_string()))?;
 
         // Enable WAL mode for better concurrency
-        conn.execute("PRAGMA journal_mode=WAL", &[] as &[&dyn rusqlite::ToSql])?;
+        // Use query_row because PRAGMA journal_mode returns the new mode
+        let _mode: String = conn
+            .query_row("PRAGMA journal_mode=WAL", &[] as &[&dyn rusqlite::ToSql], |row| {
+                row.get(0)
+            })?;
 
         // Create schema_version table
         conn.execute(

crates/miroir-core/tests/task_store.proptest-regressions

@@ -0,0 +1,7 @@
+# Seeds for failure cases proptest has generated in the past. It is
+# automatically read and these particular cases re-run before any
+# novel cases are generated.
+#
+# It is recommended to check this file in to source control so that
+# everyone who runs the test benefits from these saved cases.
+cc 3b3d90350f9e49f193918fb461dbcdf863f0ad2f7038d119306a1a4802b98c26 # shrinks to tasks = []

crates/miroir-ctl/Cargo.toml

@@ -22,3 +22,4 @@ toml = "0.8"
 [dev-dependencies]
 pretty_assertions = "1"
 tempfile = "3.14"
+serial_test = "3"

crates/miroir-ctl/src/credentials.rs

@@ -144,6 +144,7 @@ mod tests {
     }
 
     #[test]
+    #[serial_test::serial]
     fn test_env_var_takes_precedence() {
         // Ensure clean state at start of test
         env::remove_var(ENV_VAR);
@@ -192,6 +193,7 @@ mod tests {
     }
 
     #[test]
+    #[serial_test::serial]
     fn test_flag_as_fallback() {
         // No env var, no file - flag should be used
         env::remove_var(ENV_VAR);
@@ -200,6 +202,7 @@ mod tests {
     }
 
     #[test]
+    #[serial_test::serial]
     fn test_no_credentials_returns_none() {
         env::remove_var(ENV_VAR);
         let result = load_admin_key(None as Option<String>).unwrap();