fix: address 54 MEDIUM/LOW priority PR review issues

Comprehensive fixes across Python code, shell scripts, and documentation
addressing all remaining MEDIUM and LOW priority review comments.

Python Code Fixes (27 fixes):
- tools/info.py: Simplified dispatch with lookup tables, defensive guards,
  CPU fallback formatting, !s conversion flags, module-level sync assertion
- tools/docker.py: Case-insensitive container ID regex, keyword-only confirm,
  module-level ALL_ACTIONS constant
- tools/virtualization.py: Normalized single-VM dict responses, unified
  list/details queries
- core/client.py: Fixed HTTP client singleton race condition, compound key
  substring matching for sensitive data redaction
- subscriptions/: Extracted SSL context creation to shared helper in utils.py,
  replaced deprecated ssl._create_unverified_context API
- tools/array.py: Renamed parity_history to parity_status, hoisted ALL_ACTIONS
- tools/storage.py: Fixed dict(None) risks, temperature 0 falsiness bug
- tools/notifications.py, keys.py, rclone.py: Fixed dict(None) TypeError risks
- tests/: Fixed generator type annotations, added coverage for compound keys

Shell Script Fixes (13 fixes):
- dashboard.sh: Dynamic server discovery, conditional debug output, null-safe
  jq, notification count guard order, removed unused variables
- unraid-query.sh: Proper JSON escaping via jq, --ignore-errors and --insecure
  CLI flags, TLS verification now on by default
- validate-marketplace.sh: Removed unused YELLOW variable, defensive jq,
  simplified repository URL output

Documentation Fixes (24+ fixes):
- Version consistency: Updated all references to v0.2.0 across pyproject.toml,
  plugin.json, marketplace.json, MARKETPLACE.md, __init__.py, README files
- Tool count updates: Changed all "26 tools" references to "10 tools, 90 actions"
- Markdown lint: Fixed MD022, MD031, MD047 issues across multiple files
- Research docs: Fixed auth headers, removed web artifacts, corrected stale info
- Skills docs: Fixed query examples, endpoint counts, env var references

All 227 tests pass, ruff and ty checks clean.

docs/research/feature-gap-analysis.md

@@ -1,7 +1,7 @@
 # Unraid API Feature Gap Analysis
 
 > **Date:** 2026-02-07
-> **Purpose:** Comprehensive inventory of every API capability that could become an MCP tool, cross-referenced against our current 26 tools to identify gaps.
+> **Purpose:** Comprehensive inventory of every API capability that could become an MCP tool, cross-referenced against our current 10 tools (90 actions) to identify gaps.
 > **Sources:** 7 research documents (3,800+ lines), Unraid API source code analysis, community project reviews, official documentation crawl.
 
 ---
@@ -497,7 +497,7 @@ GRAPHQL_PUBSUB_CHANNEL {
 
 ## F. API Capabilities NOT Currently in the MCP Server
 
-The current MCP server has 26 tools. The following capabilities are available in the Unraid API but NOT covered by any existing tool.
+The current MCP server has 10 tools (90 actions) after consolidation. The following capabilities are available in the Unraid API but NOT covered by any existing tool.
 
 ### F.1 HIGH PRIORITY - New Tool Candidates
 
@@ -663,7 +663,7 @@ The current MCP server has 26 tools. The following capabilities are available in
 | **Queries** | ~30+ | 14 | ~16+ uncovered |
 | **Mutations** | ~50+ | 10 (start/stop Docker+VM, RClone CRUD) | ~40+ uncovered |
 | **Subscriptions** | ~30+ | 0 (2 diagnostic only) | ~30+ uncovered |
-| **Total Operations** | ~110+ | 24 active | ~86+ uncovered |
+| **Total Operations** | ~110+ | 90 active (10 tools) | ~20+ uncovered |
 
 **Current coverage: approximately 22% of available API operations.**
 
@@ -691,7 +691,7 @@ Capabilities this project offers that we do NOT:
 | **Update Status** | Check for OS/plugin updates | NOT available via GraphQL API |
 | **Mover Control** | Invoke the mover tool | NOT available via GraphQL API (Issue #1873) |
 | **Disk Thresholds** | Warning/critical temp settings | Partially available via `ArrayDisk.warning`/`critical` |
-| **54 MCP Tools** | Full MCP tool suite | We have 26 |
+| **54 MCP Tools** | Full MCP tool suite | We have 10 tools (90 actions) |
 | **WebSocket Events** | Real-time event stream | We have diagnostic-only subscriptions |
 
 ### G.2 PSUnraid (PowerShell Module)
@@ -828,7 +828,7 @@ Chose SSH over GraphQL API due to these gaps:
 | | **Low Priority Subtotal** | **18** | **92** |
 | | **GRAND TOTAL NEW TOOLS** | **66** | **92** |
 
-**Current tools: 26 | Potential total: 92 | Gap: 66 tools (72% of potential uncovered)**
+**Current tools: 10 (90 actions) | Potential total: ~110+ operations | Remaining gap: ~20+ uncovered operations**
 
 ---