Deliver all Phase 1-3 skill improvements

[harrymunro]

Summary

• Adds 17 new features across all three improvement phases (Quick Wins, Core Enhancements, Ecosystem & Tooling)
• Creates 22 new/modified reference files covering damage control, standing orders, templates, core patterns, ecosystem tooling, and quality gates
• Integrates all new references into SKILL.md with a new Quick Start section, Ecosystem section, and expanded Standing Orders (9 new) and Damage Control (3 new) tables
• Updates CLAUDE.md file tree to reflect all new files

Phase 1 — Quick Wins (5 features)

Feature	File
Quick Start mode	SKILL.md
Material Conditions (XRAY/YOKE/ZEBRA)	damage-control/hull-integrity.md
Soundings budget cliff detection	damage-control/soundings.md
Quarterdeck report headline format	admiralty-templates/quarterdeck-report.md
Standing order troubleshooter	standing-order-troubleshooter.md

Phase 2 — Core Enhancements (5 features)

Feature	File
8 new standing orders	standing-orders/{silent-watch,crossing-signals,circular-tides,ghost-crews,fraying-tether,chain-break,tidal-pull,storm-surge}.md
Dynamic task ledger	dynamic-task-ledger.md
Colours Struck degradation	damage-control/colours-struck.md
Sailing orders wizard	sailing-orders-wizard.md
Captain's log plan-vs-reality	admiralty-templates/captains-log.md

Phase 3 — Ecosystem & Tooling (7 features)

Feature	File
Event-driven hooks	event-driven-hooks.md
Red-cell challenge library	red-cell-challenge-library.md
Companion plugin ecosystem	companion-plugins.md
Squadron metrics framework	squadron-metrics.md
Bulkhead doctrine	damage-control/bulkhead-doctrine.md
Broadside quality gates	broadside-quality-gates.md
Cutting the line tactic	standing-orders/cutting-the-line.md

Test plan

• Install the plugin locally and invoke /nelson to verify SKILL.md loads correctly
• Confirm Quick Start section appears before Step 1
• Verify all new standing order table entries link to existing files
• Verify all new damage control table entries link to existing files
• Verify the Ecosystem section renders correctly
• Spot-check 2-3 new reference files for consistent formatting and Royal Navy tone