feat(0092): run-from-blueprint infrastructure — restructure + topology_hash + shared seam (Tasks 1-3)

Cycle-1 infrastructure for #165 (World/C21). Behaviour-preserving + workspace
green; the CLI arm + tests (Tasks 4-5) follow.

Task 1 — restructured stage1_r_graph into stage1_signal() (the serializable
signal leg: SMA-cross -> Bias, a `price` input-role + a `bias` output) +
wrap_stage1r(signal, ...) (broker/sinks/exec/cost around a nested signal), with
stage1_r_graph() = wrap_stage1r(stage1_signal(...)). DEVIATION from the plan's
"callers untouched" claim, verified behaviour-preserving: nesting the signal
prefixes its param-space names (stage1_signal.fast.length), which broke the
sweep's bare .axis("fast.length"); fixed exactly as the #137 stop-knob machinery
does — FAST_LENGTH_SUFFIX/SLOW_LENGTH_SUFFIX suffix-resolution + stage1_r_friendly_name
arms mapping the prefixed names back to the bare manifest names. All observable
behaviour (manifest names, member keys, metrics, traces) byte-identical; the flat
graph and every metric unchanged (full suite green, incl. sweep/walkforward/MC).

Task 2 — RunManifest.topology_hash: Option<String> (Tier-1 optional, serde
default/skip — old manifests byte-identical, #156), threaded None into all 24
literal sites across 7 crates. Also fixed the aura-registry RunManifestRead
read-mirror to carry topology_hash (it was hardcoding None on load) — else a
stored hash would silently drop on the registry round-trip once Task 3 stores a
real one.

Task 3 — the shared run_signal_stage1r seam (hash the signal, wrap, compile with
params, bootstrap, run, manifest with params from param_space + topology_hash) +
the sha256_hex topology_hash helper (sha2 in aura-cli, off the frozen engine,
invariant 8). run_stage1_r now carries its topology_hash too (every run becomes
self-identifying, #158). The seam is unwired until Task 4 (transient
#[allow(dead_code)], retired there); RED-first seam tests added.

Verified: cargo test --workspace green (51 suites, 0 failures); cargo clippy
--workspace --all-targets -D warnings clean.

refs #165

crates/aura-ingest/examples/ger40_breakout_sweep.rs

@@ -68,6 +68,7 @@ fn run_point(server: &Arc<DataServer>, point: &[Cell], from: Timestamp, to: Time
             broker: "sim-optimal(pip_size=1)".to_string(),
             selection: None,
             instrument: None,
+            topology_hash: None,
         },
         metrics: summarize(&equity, &exposure),
     }

crates/aura-ingest/examples/ger40_breakout_walkforward.rs

@@ -78,6 +78,7 @@ fn run_point(
             broker: "sim-optimal(pip_size=1)".to_string(),
             selection: None,
             instrument: None,
+            topology_hash: None,
         },
         metrics: summarize(&equity, &exposure),
     };

crates/aura-ingest/examples/shared/breakout_real.rs

@@ -401,6 +401,7 @@ pub fn report_from_trace(trace: &[BarTrace], from: Timestamp, to: Timestamp) ->
             broker: "sim-optimal(pip_size=1)".to_string(),
             selection: None,
             instrument: None,
+            topology_hash: None,
         },
         metrics,
     }

crates/aura-ingest/tests/ger40_breakout_world.rs

@@ -70,6 +70,7 @@ fn run_point(server: &Arc<DataServer>, point: &[Cell], from: Timestamp, to: Time
             broker: "sim-optimal(pip_size=1)".to_string(),
             selection: None,
             instrument: None,
+            topology_hash: None,
         },
         metrics: summarize(&equity, &exposure),
     }

crates/aura-ingest/tests/real_bars.rs

@@ -91,6 +91,7 @@ fn run_sample_over(prices: Vec<(Timestamp, Scalar)>) -> RunReport {
             broker: "sim-optimal(pip_size=0.0001)".to_string(),
             selection: None,
             instrument: None,
+            topology_hash: None,
         },
         metrics,
     }

crates/aura-ingest/tests/streaming_seam.rs

@@ -91,6 +91,7 @@ fn run_sample(window: (Timestamp, Timestamp), source: Box<dyn Source>) -> RunRep
             broker: "sim-optimal(pip_size=0.0001)".to_string(),
             selection: None,
             instrument: None,
+            topology_hash: None,
         },
         metrics: summarize(&equity, &exposure),
     }