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

AGENTS.md

@@ -1,22 +0,0 @@
-
-## BMAD-METHOD Integration
-
-BMAD commands are available as native OpenCode skills in `.opencode/skills/`.
-Load the matching skill name (for example `bmad-analyst` or `bmad-create-prd`)
-when the user asks for a BMAD workflow or agent. Use the OpenCode question tool (`question`)
-when a BMAD workflow needs interactive answers. See `_bmad/COMMANDS.md` for a full reference.
-
-### Phases
-
-| Phase | Focus | Key Agents |
-|-------|-------|-----------|
-| 1. Analysis | Understand the problem | Analyst agent |
-| 2. Planning | Define the solution | Product Manager agent |
-| 3. Solutioning | Design the architecture | Architect agent |
-| 4. Implementation | Build it | Developer agent, then Ralph autonomous loop |
-
-### Workflow
-
-1. Work through Phases 1-3 using BMAD agents and workflows
-2. For PRD creation, use `_bmad/lite/create-prd.md` for single-turn generation
-3. Use the bmalph-implement transition to prepare Ralph format, then start Ralph