2.1.0 — quick-wins train: brief load, offline-durable capture, session-end verb

Three independently useful changes (IMPROVEMENT-PLANS #1/#3/#7), no schema changes:

- load --brief: token-budgeted cold-start digest (facts full, last-10 observations,
  scope+freshness, last session's key sections, agent-log lines, inbox count;
  ECHO_LOAD_BUDGET ~8000 chars, lowest-priority-first trimming). SessionStart hook
  injects the brief form; /echo-load keeps the full dump. All load reads (+ the
  sessions listing, which also feeds the heartbeat fallback) fetched in parallel.
- Offline capture durability: a fully-offline capture queues the WHOLE op as one
  semantic record; flush replays it through capture so routing/gate/aliasing re-run
  against the current index; a gate stop on replay is kept + flagged
  (needs_attention, surfaced by flush and load), never landed blind; update-path
  and ensure_daily_log writes ride safe_request; same-args captures dedupe.
- session-end: one call, one lock — session log -> agent-log line -> reflect
  proposals (gate-aware) -> optional scope set -> heartbeat LAST as the commit
  marker; dry-run default; ECHO_NOW pins HHMM; validation runs before any write.
  Stop hook nudge names the command and recognizes it as reflected.
- Fix: main() now catches the __main__ twin-module EchoError (via RuntimeError +
  .code) so helper-module errors exit with their intended codes, not tracebacks.

+19 e2e checks; all suites green. Plans renumbered: MCP container is 2.2.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

echo-memory.plugin.src/skills/echo-reflect/SKILL.md

@@ -30,4 +30,9 @@ python3 "$ECHO" reflect proposals.json --apply    # write — routes each via ca
 `reflect` dedups every proposal against the entity index (so it shows create-vs-update),
 skips below-confidence items, and routes `inbox` proposals to the capture inbox. Each
 applied item goes through the normal `capture` path — canonical frontmatter, auto-linking,
-and the recall index — and the writes are lock-guarded. $ARGUMENTS
+and the recall index — and the writes are lock-guarded.
+
+**Finishing the session?** Prefer the one-call bundle — `python3 "$ECHO" session-end
+bundle.json --apply` — which applies the reflect proposals AND writes the session log,
+Agent Log line, optional scope switch, and the heartbeat (last, as the commit marker)
+together. See the echo-memory skill's **Session Logging** section for the bundle shape. $ARGUMENTS