feat(ttp): E.3.8 R0049-R0053 canary fingerprint cohort

5 YAMLs for the canary-fingerprint cohort per Appendix B / A.9:
navigator.webdriver flag, automation canvas/audio/WebGL hash match,
WebRTC IP leak, TZ/lang vs geo mismatch, platform inconsistency.
CanaryFingerprintLifter (E.3.11) consumes by rule_id.

test_canary_rules.py: YAML-present + inert-in-v0 + xfail(strict)
gated on E.3.11.

rules/ttp/R0053.yaml

@@ -0,0 +1,19 @@
+rule_id: R0053
+rule_version: 1
+name: platform_inconsistency
+description: |
+  navigator.platform / userAgent / WebGL renderer disagree —
+  classic hand-built crawler with mismatched stealth shimming.
+applies_to:
+  - canary_fingerprint
+match:
+  kind: lifter:canary_platform_inconsistency
+emits:
+  - tactic: TA0005
+    technique_id: T1036
+    confidence: 0.8
+evidence_fields:
+  - navigator_platform
+  - user_agent
+  - webgl_renderer
+  - mismatch_pairs