sol 1.0.0 — relicense to AGPL-3.0, dual-license model

relicensed from MIT to AGPL-3.0-or-later. commercial license
available for organizations that need private modifications
(does not permit redistribution).

sol 1.0.0 ships with:
- multi-agent architecture with mistral conversations API
- user impersonation via vault-backed PAT provisioning
- gitea integration (first domain agent: devtools)
- per-user memory system with automatic extraction
- full-context evaluator with system prompt awareness
- agent recreation on prompt changes with conversation reset
- web search, sandboxed deno runtime, archive search

Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 rust-version = "1.76.0"
 authors = ["Sunbeam Studios <hello@sunbeam.pt>"]
 description = "Sol — virtual librarian Matrix bot with E2EE, OpenSearch archive, and Mistral AI"
-license = "MIT"
+license = "AGPL-3.0-or-later"
 repository = "https://src.sunbeam.pt/studio/sol"
 
 [[bin]]