session reliability: reconnect, knowledge loop, retire request_execution

Phase 1 — crash recovery: SSE auto-reconnect + backoff, polling gate
during disconnect, connection banner with retry button, empty-response
retry 3x, non-terminal resume on empty response, persistent error cards.

Phase 2/4 — visibility + continuation: custom ExecutionStatus renderer,
approvals extracted on every tool_result (not just done), activity bar
with status/goal, SessionDigest live polling, Continue button.

Phase 3 — cleanup: complete_task auto-cancels orphaned approvals,
deletes assent/destructive window keys, propose_plan marks pending
steps as replaced, plan step seq-order enforcement.

Phase 5 — knowledge loop: list_lxcs state filter (active/destroyed),
SOUL.md unmissable writeback section, propose_plan validation nudge,
complete_task writeback check, upsert_knowledge about array support,
plan generation grouping in frontend, session approval count badge.

Retire request_execution — all mutations now route through run.
Updated SOUL.md, AGENTS.md, CLIENTS.md, skills, and agent system notes.

Migration 020: plan step generation column, audit_log session_id index,
nomos_plan_executions pending-approval index.

.agents/skills/session-review/SKILL.md

@@ -36,7 +36,7 @@ For each session determine:
 
 | Signature | Root cause | Fix |
 |-----------|-----------|-----|
-| Agent: "I can't run X — only supports Y" | Missing action in `request_execution` | Add action in `internal/mcp/server.go` |
+| Agent: "I can't run X" | Missing target or capability | Use `run` with shell command — there is no fixed action enum anymore |
 | Agent: "No local knowledge on that" + no web tool | Missing `http_get` / web fetch MCP tool | Add MCP tool |
 | Empty assistant bubble (text="", no tools) | Model returned blank completion | Retry + error surfacing |
 | Non-English boilerplate refusal | Flash-tier model degradation | Response quality guard |
@@ -75,7 +75,7 @@ Session: {id[:8]} — "{title[:60]}"
 
 - `cmd/nomos/agent.go` — agent loop, tool building, response guards
 - `cmd/nomos/store.go` — session + message persistence
-- `internal/mcp/server.go` — all tool implementations including `request_execution`
+- `internal/mcp/server.go` — all tool implementations (`run`, `list_lxcs`, …)
 - `web/src/lib/components/ToolCallGroup.svelte` — tool result display
 - `nomos/SOUL.md` — agent persona and tool selection rules
 - `plans/2026-07-09-chat-sessions-improvements.md` — prior session findings