fix(SocFrameworkProofPointTap): XSIAM AI modeling rule + schema types

[scottbrumley]

fix(SocFrameworkProofPointTap): XSIAM AI modeling rule + schema types

Replaces the single-field modeling rule with the XSIAM AI-generated model
(UUID b99ae8b8, 2026-09-19), carried verbatim. That model was generated
against real tenant payloads.

Schema

• messageTime / clickTime declared datetime, not string.
• messageParts / threatsInfoMap declared string, not json.
• toAddresses added; the rule reads it and it was never declared.
  These types are what the install validator requires. With the old types the
  pack fails to install with 101704 while the Data Model Rules editor accepts
  the same XQL. The rule body was never the problem.

Rename

• id ProofpointTAP_modeling_rule -> SOCFW_ProofpointTAP_v2_ModelingRule,
  name -> "SOC Proofpoint TAP v2 Modeling Rule", directory to match.
  Naming only: three rules shared the display name "ProofpointTAP Modeling
  Rule", and POST_CONFIG Step 4 already refers to the SOC-scoped name.

Also

• ReleaseNotes/1.3.2.md -> 1_3_2.md; the SDK expects X_Y_Z.md.
• Three fields appended to the AI output: xdm.session_context_id,
  xdm.target.url, xdm.email.delivery_timestamp.

check_contribution passes including the upload step.