osint: bake facet edges into osint_scene.soa via standalone osint-bake

The served OSINT asset predated PR #44's entity->SchemaValue facet edges
(rel 10-15), so the dual-use dimension cluster (127 SchemaValue + 12
SchemaAxis) rendered as a 139-node island: connected only to itself via
VALID_FOR, touching the entity graph at zero points. In the cockpit it
floated free regardless of the dimensions toggle.

cockpit-server's own re-bake OOMs at the disk cap (lance+datafusion+arrow+
deno/V8), so lift the pure bake (aiwar-ingest + zero-dep lance-graph-
contract, no heavy closure) into a light tool crate, osint-bake, and
regenerate the asset through the REAL Rust path -- not a Python splice,
which would have diverged (the real bake emits 431 facet edges; an earlier
label-join estimate said 438).

Verified by decoding the bytes (before -> after):
- nodes 920 unchanged, GUID section byte-identical
- edges 3344 -> 3775 (+431 facet edges, rel 10-15; 0 originals changed)
- dimension<->entity bridges: {} -> System 297, Stakeholder 122, Hist 12
- BFS from a System now reaches 118/127 SchemaValues, 10/12 SchemaAxes
  => the dimensions share the entity graph's connected component

The 12 SchemaAxis nodes are the family/category nodes; the facet edges make
them connective tissue (entity -> value -> VALID_FOR -> axis) rather than a
detached legend.

osint-bake's bake is verbatim-identical to osint_gotham.rs's (single source
of truth until cockpit-server delegates to it -- deferred; that edit needs a
cockpit-server build to verify, blocked by the disk cap). Builds clean,
7/7 tests pass, clippy-clean. cockpit-server itself is untouched.

Incidental: osint_gotham.rs's soa_bytes_have_a_parseable_header test
hard-equates byte length to the fixed records and is stale (predates the
OSO1 label tail); corrected in the mirror, original still needs the fix.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TzqvDqbFRzyx17EkLKBoZF

Author: claude

Cargo.lock

@@ -0,0 +1,21 @@
+[package]
+name = "osint-bake"
+version.workspace = true
+edition.workspace = true
+description = "Light, standalone regenerator for cockpit-server's osint_scene.soa — the pure aiwar→SoA bake, with no lance/datafusion/deno closure."
+
+[lib]
+name = "osint_bake"
+path = "src/lib.rs"
+
+[[bin]]
+name = "osint-bake"
+path = "src/main.rs"
+
+[dependencies]
+aiwar-ingest = { path = "../aiwar-ingest" }
+lance-graph-contract.workspace = true
+serde_json.workspace = true
+
+[lints]
+workspace = true