A tilde inside double quotes never expands, so the generated
`_BRAIN_SYNC_BIN="~/..."` assignments resolved to a literal ./~ path and
the Artifacts Sync + telemetry-finalize blocks silently no-op'd in every
skill that carried them (regression of #785). The preamble resolvers now
emit $HOME-based paths; all generated SKILL.md files regenerate identically
from the fixed templates, and a static tripwire fails the suite if a
quoted-tilde assignment ever reappears in generated output.
Fixes#1656, #1715.
Contributed by @jawadakram20 (PR #2333).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
