codeburn context: support Kimi Code sessions

[KENSHI601]

codeburn context (added in 0.9.15, experimental) currently only accepts --provider claude|codex. The Kimi Code provider landed in 0.9.19 (#750, #747) for usage tracking, but its sessions can't be opened in the context browser yet.

Request: extend codeburn context to Kimi Code.

Where the data is: Kimi Code writes per-session "wire" logs at
~/.kimi-code/sessions/<workspace-slug>/<session-id>/agents/<agent>/wire.jsonl

It's JSONL, one typed event per line. Record types observed on the current CLI:

• metadata — protocol_version, created_at
• config.update — modelAlias, systemPrompt, thinkingEffort
• llm.request — model, maxTokens, kind, provider
• llm.tools_snapshot — full tool list per request (tools, hash)
• context.append_message / context.append_loop_event — the actual context content (messages, tool results)
• usage.record — per-call usage token fields + usageScope
• turn.prompt, tools.set_active_tools, permission.set_mode

So the building blocks mirror what claude/codex offer: context content in context.append_*, tool schemas in llm.tools_snapshot, exact token anchoring via usage.record.

Happy to provide a redacted sample wire.jsonl if that helps.

[KENSHI601]

Closing this — no longer needed. Thanks for the great project!