docs: update license from AGPL to PMPL

- Replace AGPL-3.0-or-later with PMPL-1.0-or-later
- Update license name and URLs
- Align with palimpsest-license standard

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: Your Name

README.adoc

@@ -210,7 +210,7 @@ rpa-elysium/
 │   ├── ai/               # AI components (Rust/WASM)
 │   ├── console/          # Management UI (ReScript)
 │   └── services/         # Backend services (Gleam)
-├── LICENSE.txt           # MIT OR AGPL-3.0-or-later
+├── LICENSE.txt           # MIT OR PMPL-1.0-or-later
 ├── README.adoc           # This file
 ├── ROADMAP.adoc          # Development roadmap
 └── justfile              # Build automation