fix(preamble): quoted tilde made Artifacts Sync and telemetry-finalize dead code in 49 skills

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>

scripts/resolvers/preamble/generate-preamble-bash.ts

@@ -1,4 +1,5 @@
 import type { TemplateContext } from '../types';
+import { quoteSafePath } from '../types';
 import { getHostConfig } from '../../../hosts/index';
 
 export function generatePreambleBash(ctx: TemplateContext): string {
@@ -73,7 +74,7 @@ echo '{"skill":"${ctx.skillName}","ts":"'$(date -u +%Y-%m-%dT%H:%M:%SZ)'","repo"
 fi
 for _PF in $(find ~/.gstack/analytics -maxdepth 1 -name '.pending-*' 2>/dev/null); do
   if [ -f "$_PF" ]; then
-    if [ "$_TEL" != "off" ] && [ -x "${ctx.paths.binDir}/gstack-telemetry-log" ]; then
+    if [ "$_TEL" != "off" ] && [ -x "${quoteSafePath(ctx.paths.binDir)}/gstack-telemetry-log" ]; then
       ${ctx.paths.binDir}/gstack-telemetry-log --event-type skill_run --skill _pending_finalize --outcome unknown --session-id "$_SESSION_ID" 2>/dev/null || true
     fi
     rm -f "$_PF" 2>/dev/null || true