Agent Plugins 0.14.3

From trial 3: five fresh agents on 0.14.2 (an ESS specification from nothing, an ESS retrofit of an
existing service, an ESS pipeline through generate and a synthesized suite, AEP planning over a
TODO.md, worktree onboarding) plus a migration of a seeded older install.

• ess:specifying: lifecycle state names start upper-case; ess-inputs.yaml is documented and
  recommended once anything is generated, since a directory without it is read whole;
  generate --out <dir> writes its own schema/ or openapi/ below <dir>; an entity invariant
  needs a view holding every state and publishing the fields it reads, or synthesize refuses the
  check. The syntax example gains that view: it synthesized with 3 refusals, now 12 scenarios and 0.
• The syntax reference says how to write rules the trials hit: a limit read from stored state, and
  no double booking (a per-slot lifecycle, or UNMAPPED:). A time range is ordered by an Integer
  length; comparing two Timestamps validates and then fails synthesize, and Duration does not
  compare with a number.
• ess:retrofitting: ess infra import openapi reads OpenAPI 3.1 only; aep plan reverse openapi
  accepts 3.0. Its description named the retired specify and coverage skills.
• ess:testing-conformance: what the built-in targets interpreted, oracle-fixture and billing
  are, why a new domain reports nothing useful against them, and synthesize --target go|typescript
  to hold a real implementation to the suite.
• aep:planning: the --protocols and --profile values for reverse init; body files live in a
  git-ignored directory of the repository, not $TMPDIR; a critic's empty findings fence is
  recorded as [], which the store accepts, since it refuses the empty fence. Two references to
  ess skill, which no longer exists, now name b10x skill ess:specifying.
• aep:migrating: reverse init creates the store in every case; a backlog item that introduces a
  new noun gets its ESS domain before its stories. Provenance says whose revisions it counts.
• b10x:init and aep:init offer ess with aep.
• The design and parallel-safety critics name the same two remedies for a shared file (an ordering
  edge, or splitting the file) instead of asking for opposite changes in consecutive rounds.
• worktree:init: where to get a profile and where it goes; doctor --check exits 0 with
  profiles=0; cleanup needs a remote. worktree:managing-worktrees: switch to a branch before the
  first commit.
• b10x:routing routes ESS and worktree work to their skills instead of to ess skill.
• b10x upgrade installs the replacement of a legacy plugin it removes; it used to remove it and
  only note the replacement as missing. A legacy local install is not reinstalled at local when
  the user scope covers it. A plan names Beyond10x plugins on a host it does not cover. b10x check
  no longer says nothing is set up when only a legacy plugin is installed.
• agentplugins-check tools also synthesizes and generates the ESS syntax example.
• agentplugins-check parses its arguments with clap; new trial-isolation checks that a headless
  trial loaded only the plugins its sandbox installed, at the version under test, and no MCP server.
  Sandboxes live outside $HOME (/var/tmp/b10x-trials-$USER): below it, a trial loaded the
  operator's CLAUDE.md and a settings file an earlier trial left behind. task trial:sandbox and
  task trial:run, and the repository skill improving-by-trial, describe the loop.
• The README lists every plugin's skills and agents, linked to their files; the gate keeps it
  exact. The retired-name sweep covers ess skill and the beyond10x/ess marketplace.