feat(commands): add /connect thinking tool command

- Add .claude/commands/connect.md: bridges two disparate vault topics
  by tracing backlinks and surfacing unexpected connections
- Update my-commands.md with /connect description and usage

vin-obsidian-workflows/.claude/commands/connect.md

@@ -0,0 +1,25 @@
+Bridge two disparate topics using my vault's link graph.
+
+1. Read all vault notes:
+   - @my-vault/The Junior Employee Mental Model.md
+   - @my-vault/Plan Mode.md
+   - @my-vault/CLAUDE.md Best Practices.md
+   - @my-vault/Context Window Management.md
+   - @my-vault/The Verification Loop.md
+   - @my-vault/Subagents.md
+   - @my-vault/Custom Commands.md
+   - @my-vault/Hooks.md
+   - @my-vault/The Death Spiral.md
+   - @my-vault/Voice-First Workflows.md
+
+2. Run these CLI commands to trace connection paths:
+   - `obsidian backlinks file="Plan Mode"`
+   - `obsidian backlinks file="Hooks"`
+
+3. Pick two notes that seem unrelated and find the hidden bridge between them. What do they share that isn't obvious? What would combining their insights produce?
+
+4. Output format:
+   - **Domain A**: [note/topic]
+   - **Domain B**: [note/topic]
+   - **The bridge**: [unexpected connection]
+   - **The insight**: [what this connection means]

vin-obsidian-workflows/my-commands.md

@@ -7,3 +7,9 @@ Commands built during this lesson will be documented here.
 Loads personal context from the vault in one shot. Reads all 10 vault notes, runs CLI commands to map tag counts, backlinks, and orphan notes, then summarizes the overall knowledge structure.
 
 **Use it:** At the start of any Claude Code session to instantly load your world — no re-explaining needed.
+
+## /connect
+
+Finds unexpected bridges between two seemingly unrelated notes in the vault. Reads all vault notes, traces backlinks via CLI, then surfaces a hidden connection and explains what it means.
+
+**Use it:** When you want to spark new thinking by combining two domains you haven't consciously linked.