chore: clean up repo for public release

- Remove BMAD framework, IDE configs, dev screenshots, test files,
  internal docs, and backup files
- Rename keep-notes/ to memento-note/
- Update all references from keep-notes to memento-note
- Add Apache 2.0 license with Commons Clause (non-commercial restriction)
- Add clean .gitignore and .env.docker.example

.agent/skills/bmad-domain-research/research.template.md

@@ -1,29 +0,0 @@
----
-stepsCompleted: []
-inputDocuments: []
-workflowType: 'research'
-lastStep: 1
-research_type: '{{research_type}}'
-research_topic: '{{research_topic}}'
-research_goals: '{{research_goals}}'
-user_name: '{{user_name}}'
-date: '{{date}}'
-web_research_enabled: true
-source_verification: true
----
-
-# Research Report: {{research_type}}
-
-**Date:** {{date}}
-**Author:** {{user_name}}
-**Research Type:** {{research_type}}
-
----
-
-## Research Overview
-
-[Research overview and methodology will be appended here]
-
----
-
-<!-- Content will be appended sequentially through research workflow steps -->