feat: Add VEX compact fixture and implement offline verifier for Findings Ledger exports

- Introduced a new VEX compact fixture for testing purposes.
- Implemented `verify_export.py` script to validate Findings Ledger exports, ensuring deterministic ordering and applying redaction manifests.
- Added a lightweight stub `HarnessRunner` for unit tests to validate ledger hashing expectations.
- Documented tasks related to the Mirror Creator.
- Created models for entropy signals and implemented the `EntropyPenaltyCalculator` to compute penalties based on scanner outputs.
- Developed unit tests for `EntropyPenaltyCalculator` to ensure correct penalty calculations and handling of edge cases.
- Added tests for symbol ID normalization in the reachability scanner.
- Enhanced console status service with comprehensive unit tests for connection handling and error recovery.
- Included Cosign tool version 2.6.0 with checksums for various platforms.

docs/modules/findings-ledger/redaction-manifest.json

@@ -0,0 +1,29 @@
+{
+  "schemaVersion": "redaction.v1",
+  "generatedAt": "2025-12-02T00:00:00Z",
+  "owner": "findings-ledger-guild",
+  "rules": {
+    "ledger.event": [
+      { "path": "$.actor.id", "action": "mask", "maskWith": "user:<realm>" },
+      { "path": "$.payload.comment", "action": "drop" },
+      { "path": "$.payload.ticket.url", "action": "drop" },
+      { "path": "$.payload.attachments[*].downloadUrl", "action": "drop" }
+    ],
+    "export.canonical": [
+      { "path": "$.actorId", "action": "mask", "maskWith": "user:<realm>" },
+      { "path": "$.comment", "action": "drop" },
+      { "path": "$.attachments", "action": "drop" }
+    ],
+    "export.compact": [
+      { "path": "$.actorId", "action": "drop" },
+      { "path": "$.comment", "action": "drop" },
+      { "path": "$.policyRationale", "action": "drop" },
+      { "path": "$.attachments", "action": "drop" },
+      { "path": "$.labels", "action": "drop" }
+    ],
+    "observability": [
+      { "path": "$.event_body", "action": "drop" },
+      { "path": "$.actor_id", "action": "hash", "hashWith": "sha256" }
+    ]
+  }
+}