docs: document notification-routing skill

[diberry]

Summary

The notification-routing skill (pub-sub channel routing to prevent alert fatigue) was shipped but has no documentation on the docs site.

Source

• Code PR: feat(skills): add notification-routing skill -- pub-sub channel routing to prevent alert fatigue bradygaster/squad#625 (closes content: Taming Agent Alert Fatigue: Multi-Channel Notification Routing #50)
• Author: Tamir Dresher
• Commit: a9c06b09 — feat(skills): add notification-routing skill
• Status: Merged to dev, undocumented

What needs documenting

1. New docs page explaining the notification-routing skill
2. How pub-sub channel routing works
3. How it prevents alert fatigue in multi-agent teams
4. Configuration options and examples

Acceptance criteria

• Docs page explains notification routing concept and usage
• Examples of routing rules and channel configuration
• Cross-links to skills documentation
• Navigation entry added
• docs-quality tests pass

Requirements

• Independent PR (single commit, squashed)
• Full team review (Flight + FIDO) before merge

[github-actions]

📋 Assigned to DSKY (TUI Engineer)

Issue: #67 — docs: document notification-routing skill

DSKY will pick this up in the next Copilot session.

For Copilot coding agent: If enabled, this issue will be worked automatically.
Otherwise, start a Copilot session and say:
DSKY, work on issue #67

[github-actions]

🏗️ Squad Triage — Flight (Lead)

Issue: #67 — docs: document notification-routing skill
Assigned to: FIDO (Quality Owner)
Reason: Issue relates to testing/quality work

@copilot evaluation: 🔴 Not suitable — issue involves work outside the coding agent's capability profile.

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[github-actions]

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