skillscript-runtime v0.27.1

Upgrade impact: none (additive). Example + help-content fixes; no runtime behavior change.

A pre-announcement review ran every shipped example against the current runtime and contracts. Findings, all fixed:

• Four example TypeScript files had drifted off the connector contracts and no longer compiled — the fork-me DataStoreTemplate and the onboarding scaffold's file-data-store were missing the v0.13.8 DataStore.get(); file-data-store / openai-local-model / tmux-shell-agent-connector used stale feature-flag keys outside the closed per-kind unions; the tmux connector was missing WakeReceipt.woken plus the health_check() / request_response() contract methods. Nothing compiled the example .ts files, so the drift was silent — the worst first-copy experience for an adopter forking a template.
• morning-brief declared # OnError: morning-brief-degraded — a skill that doesn't ship (dangling reference, so the example didn't compile standalone) and a mechanism that isn't wired in the runtime. Rewritten to the v0.27.0 pattern it should be teaching: a per-leg (fallback:) on every gather leg + a fallback-bound BRIEF so the output template always renders, degrading loudly per source.
• New tests/examples-corpus.test.ts locks all of this in: every bundled skill compiles (with declared inputs), the infra-free skills execute end-to-end against the bundled bootstrap, the programmatic trace demo runs, and every example .ts typechecks against the current contracts — the fork-template-drift guard that was missing.
• help({topic:"composition"}) recursion default corrected — said "depth-5"; the runtime's DEFAULT_MAX_RECURSION_DEPTH is 10.
• Docs pass (pre-announcement). language-reference.md re-rendered from the canonical atoms (v0.27.0 uniform (fallback:) semantics; # OnError: flagged parsed-but-not-wired throughout). adopter-playbook.md: the retired ??/ask() mutation-authorization path removed (three mentions; retired in v0.16.0) and the (fallback:) trailer section updated to the uniform op list. configuration.md: SKILLSCRIPT_SECRET_<NAME> added to the env-var reference (the one runtime env var missing from the table). adopter-agent-guide.md: help topic lists updated to the current 7-topic set (incl. error-handling). index.md: examples bullet no longer advertises the unwired # OnError:. ARCHITECTURE.md re-synced to shipped reality (LOC ceiling, file inventory incl. secrets.ts, canonical parser grammar, ~77 lint rules, delete CLI command, v0.27.0 runtime row) and its AMP doc atoms updated to match.