skills(automation): teach the authored control-flow trio, demote the BPMN one

The package taught only `parallel_gateway` / `join_gateway` / `boundary_event`
-- 0 authorings anywhere in the corpus -- and never mentioned the ADR-0031
structured constructs the corpus actually uses (`loop` 3, `try_catch` 2,
`parallel` 2). `notify`, the most-used node type at 20 authorings, had one table
cell and no config keys, including no mention of its documented silent no-op.

ADD (funded, each claim verified at source):
  AUTO-F-01  `parallel` / `try_catch` / `loop`-container rows; the gateway trio
             marked BPMN-interop lowering, not author-facing.
  AUTO-F-02  capability -> surface table, adding `approvals` and `messaging`.
  AUTO-E-04  `notify` config fence + the messaging-absent silent success.
  ported     flow-filter precedence + the static-checkability split (this
             package is the anchor; the query flight deleted its copy).
  AUTO-G-02  `autolaunched` + a `record-*` binding behaves like `record_change`.
  AUTO-E-01  os:check marker on the schedule-flow example (265 -> 266 blocks).
  AUTO-A-02/A-03  `jobs` / `webhooks` collections and screen-flow routing in the
             description.

DELETE / MERGE: AUTO-A-01 (ETL, retired at spec 17), AUTO-B-03, AUTO-B-06,
AUTO-B-07, AUTO-C-01, AUTO-C-02, AUTO-C-03, AUTO-C-04, AUTO-D-01..D-09,
AUTO-E-02. REORDER (free): AUTO-B-01, AUTO-B-02.

12,768 -> 12,269 tokens (ceiling 12,768; every addition paid in this file).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LraLgQVGq8egUwfYZpbYt1

Author: claude