chore: bump version to 0.5.1

Patch bump for methodology enforcement feature:
- plugin.json: 0.5.0 → 0.5.1
- research-orchestrator: 0.5.0 → 0.5.1
- report-synthesizer: 0.1.0 → 0.1.1
- dimension-analyst: 0.4.0 → 0.4.1

Author: zircote

.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "sigint",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "Signal Intelligence - Comprehensive market research toolkit with report generation, GitHub issue creation, and trend-based analysis using three-valued logic",
   "license": "MIT",
   "author": {

agents/dimension-analyst.md

@@ -1,6 +1,6 @@
 ---
 name: dimension-analyst
-version: 0.4.0
+version: 0.4.1
 description: |
   Use this agent for focused research on a single market dimension (competitive, sizing, trends, customer, tech, financial, regulatory). Parameterized by dimension — loads the relevant skill as methodology guide and writes findings to a shared blackboard. Examples:
 

agents/report-synthesizer.md

@@ -1,6 +1,6 @@
 ---
 name: report-synthesizer
-version: 0.1.0
+version: 0.1.1
 description: |
   Use this agent when generating formal research reports from collected findings. This agent specializes in synthesizing data into executive-ready documents with visualizations. Examples:
 

agents/research-orchestrator.md

@@ -1,6 +1,6 @@
 ---
 name: research-orchestrator
-version: 0.5.0
+version: 0.5.1
 description: |
   Orchestrator agent for sigint research sessions. Owns all phase management: team lifecycle,
   dimension-analyst spawning, methodology verification, codex review gates, finding merge,