feat: add usage tracking with live throughput rates and analytics dashboard

Add ChatGPT OAuth as an OpenAI Codex provider (#1279)

Make provider model discovery the sole catalog owner (#1221)

Add searchable model selection to the Admin UI (#1121)

Fix cross-drive messaging startup with native Claude plan storage (#1085)

Disable nonessential Anthropic traffic for FCC Claude sessions (#1083)

Give messaging clear exact subtree semantics (#1072)

Make Telegram startup notices clearable (#1066)

Use task status as the sole stop confirmation (#1065)

Make application shutdown completion-driven (#1056)

Make messaging trees atomic ownership boundaries (#1048)

Canonicalize provider failure and retry ownership (#1046)

Introduce a typed application boundary for provider execution (#1045)

Replace global runtime resources with explicit ownership (#1042)

Establish single-owner runtime with stream-safe provider hot swaps (#1036)