chore: snapshot working tree - pty_exited notifications + in-flight inference WIP

feat(booterm): structured pty_exited WS notifications. Plan-validated, impl-validated, code-reviewed green (contracts build clean, contracts test 29/29, booterm + web typecheck clean).

wip: in-progress inference/provider refactor (agents.ts, provider.ts, new llama-providers.ts, removed llama-args-validator), plus arena, dispatcher, compaction, schema changes.

openspec: pty-exit-notifications complete; x-agent-flags planned (not yet implemented).

.codesight/schema.md

@@ -137,6 +137,173 @@
 - items_completed: integer (required)
 - metadata: jsonb
 
+### control_hosts
+- provider_id: text (pk, fk)
+- ssh_host: text
+- ssh_user: text
+- ssh_key_path: text
+- config_path: text
+- restart_cmd: text
+- os: text
+- gpu_label: text
+- enabled: boolean (required)
+
+### control_requests
+- id: bigint(auto) (pk)
+- provider_id: text (required, fk)
+- swap_entry_id: integer (required, fk)
+- ts: timestamp(tz) (required)
+- model: text
+- req_path: text
+- status_code: integer
+- duration_ms: integer
+- cache_tokens: integer
+- input_tokens: integer
+- output_tokens: integer
+- prompt_tps: real
+- gen_tps: real
+- has_capture: boolean (required)
+- capture: jsonb
+
+### control_perf_samples
+- provider_id: text (required, fk)
+- ts: timestamp(tz) (required)
+- gpu: jsonb
+- sys: jsonb
+
+### control_perf_rollup_5m
+- provider_id: text (required, fk)
+- bucket: timestamp(tz) (required)
+- gpu_agg: jsonb
+- sys_agg: jsonb
+
+### control_model_events
+- provider_id: text (required, fk)
+- model: text (required)
+- state: text (required)
+- ts: timestamp(tz) (required)
+- detail: jsonb
+
+### bench_suites
+- id: text (pk)
+- name: text (required)
+- provider_id: text (required, fk)
+- model: text (required)
+- repetitions: integer (required)
+- metadata: jsonb
+
+### bench_runs
+- id: text (pk)
+- suite_id: text (required, fk)
+- job_type: text (required)
+- status: text (required)
+- started_at: timestamp(tz)
+- finished_at: timestamp(tz)
+- total_samples: integer (required)
+- completed_samples: integer (required)
+- concurrent_foreign_requests: integer (required)
+- temperature: real
+- top_p: real
+- aggregate: jsonb
+- regression_flag: text
+- error: text
+
+### bench_samples
+- id: bigint(auto) (pk)
+- run_id: text (required, fk)
+- prompt_tokens: integer (required)
+- gen_tokens: integer (required)
+- concurrency: integer (required)
+- repetition: integer (required)
+- ttft_ms: real
+- total_ms: real
+- prompt_tps: real
+- gen_tps: real
+- cache_n: integer
+- error: text
+
+### bench_baselines
+- provider_id: text (required, fk)
+- model: text (required)
+- aggregate: jsonb (required)
+- run_id: text (required, fk)
+
+### eval_suites
+- id: text (pk)
+- name: text (required)
+- kind: text (required)
+- version: integer (required)
+- tasks: jsonb (required)
+- judge_model: text
+- judge_model_version: text
+- metadata: jsonb
+
+### eval_runs
+- id: text (pk)
+- suite_id: text (required, fk)
+- job_type: text (required)
+- provider_id: text (required, fk)
+- model: text (required)
+- quant: text
+- status: text (required)
+- judge_model: text
+- judge_model_version: text
+- started_at: timestamp(tz)
+- finished_at: timestamp(tz)
+- total_tasks: integer (required)
+- completed_tasks: integer (required)
+- aggregate: jsonb
+- error: text
+
+### eval_results
+- id: bigint(auto) (pk)
+- run_id: text (required, fk)
+- task_id: text (required, fk)
+- task_index: integer (required)
+- score: real
+- max_score: real
+- rationale: text
+- sandbox_exit_code: integer
+- sandbox_stderr: text
+- sandbox_stdout: text
+- execution_ms: integer
+- error: text
+
+### control_reports
+- id: text (pk)
+- kind: text (required)
+- interval: text (required)
+- period_start: timestamp(tz) (required)
+- period_end: timestamp(tz) (required)
+- markdown: text (required)
+- stats: jsonb
+
+### control_schedule_meta
+- name: text (pk)
+- interval: text (required)
+- enabled: boolean (required)
+- last_run_at: timestamp(tz)
+
+### route_policies
+- id: text (pk)
+- name: text (required)
+- virtual_model: text (required)
+- candidates: jsonb (required)
+- fallback: text
+- enabled: boolean (required)
+
+### route_dispatch_log
+- id: bigint(auto) (pk)
+- ts: timestamp(tz) (required)
+- virtual_model: text (required)
+- chosen_provider_id: text (fk)
+- chosen_model: text
+- candidates_tried: jsonb
+- status: text (required)
+- source: text
+- error: text
+- duration_ms: integer
+
 ### projects
 - id: uuid (pk)
 - name: text (required)
@@ -215,3 +382,12 @@
 - turn_number: integer (required)
 - messages: jsonb (required)
 - tool_states: jsonb (required)
+
+### memory_entries
+- id: uuid (pk)
+- project_id: uuid (required, fk)
+- topic: text (required)
+- title: text (required)
+- content: text (required)
+- date: date
+- mood: text