docs: replace stale molecule-monorepo clone URLs with molecule-core

README quick-start and docs/quickstart.md both referenced the legacy
molecule-monorepo repository. Update to molecule-core so new users
clone the correct repo.

Fixes #1837

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

README.md

@@ -49,8 +49,8 @@
 ## Quick Start
 
 ```bash
-git clone https://git.moleculesai.app/molecule-ai/molecule-monorepo.git
-cd molecule-monorepo
+git clone https://git.moleculesai.app/molecule-ai/molecule-core.git
+cd molecule-core
 ./scripts/dev-start.sh
 ```
 

docs/quickstart.md

@@ -17,8 +17,8 @@ This path is aligned to the current repository and current UI. It gets you from
 ## The one-command path
 
 ```bash
-git clone https://git.moleculesai.app/molecule-ai/molecule-monorepo.git
-cd molecule-monorepo
+git clone https://git.moleculesai.app/molecule-ai/molecule-core.git
+cd molecule-core
 ./scripts/dev-start.sh
 ```
 
@@ -42,8 +42,8 @@ If you'd rather run each component yourself — useful when you're iterating on
 ### Step 1: Clone the repository
 
 ```bash
-git clone https://git.moleculesai.app/molecule-ai/molecule-monorepo.git
-cd molecule-monorepo
+git clone https://git.moleculesai.app/molecule-ai/molecule-core.git
+cd molecule-core
 ```
 
 ### Step 2: Start the shared infrastructure