Expand git guide for origin and commit approval workflow

Update git-guide.md to document the repository URL used for this workspace as the current origin.

Require showing the exact git commit command alongside proposed commit messages.

Wait for explicit approval before creating a commit.

git-guide.md

@@ -2,8 +2,13 @@
 
 This file records repo-specific git workflow preferences for `/home/aw/code/cds`.
 
+## Repository Reference
+- Active repository: `https://git.devreser.com/anthony.wen/cds-ai.git`
+- Treat this repository URL as the current `origin` for this workspace unless the user explicitly says it changed.
+
 ## Commit Message Requests
 - If the user asks for a git commit description, draft the proposed commit message first.
+- When drafting a commit message, also show the exact `git commit` command that would be used.
 - Do not run `git commit` immediately after drafting the message.
 - Wait for explicit user approval before creating the commit.