merge: integrate origin/main (v0.18.3.0) — community wave

Resolves conflicts:
- VERSION: kept 0.19.0.0 (feature branch, higher than main's 0.18.3.0)
- package.json: kept 0.19.0.0
- CHANGELOG.md: preserved 0.19.0.0 at top, inserted 0.18.3.0 between 0.19.0.0 and 0.18.2.0

Main brought community wave (6 PRs + hardening):
- Windows cookie import
- Persistent browse server across CLI invocations
- One-command OpenCode install
- OpenClaw skill frontmatter fixes
- Cookie picker UI resilience

Auto-merge applied to design.ts, design-consultation/SKILL.md.tmpl,
design-shotgun/SKILL.md.tmpl, and plan-design-review/SKILL.md.tmpl —
main's UX_PRINCIPLES changes and my TASTE_PROFILE resolver coexist cleanly.

Regenerated all SKILL.md files via gen:skill-docs and refreshed ship
golden fixtures. 423 tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

office-hours/SKILL.md

@@ -1185,7 +1185,7 @@ Present via AskUserQuestion. Do NOT proceed without user approval of the approac
 _ROOT=$(git rev-parse --show-toplevel 2>/dev/null)
 D=""
 [ -n "$_ROOT" ] && [ -x "$_ROOT/.claude/skills/gstack/design/dist/design" ] && D="$_ROOT/.claude/skills/gstack/design/dist/design"
-[ -z "$D" ] && D=~/.claude/skills/gstack/design/dist/design
+[ -z "$D" ] && D="$HOME/.claude/skills/gstack/design/dist/design"
 [ -x "$D" ] && echo "DESIGN_READY" || echo "DESIGN_NOT_AVAILABLE"
 ```
 
@@ -1200,7 +1200,7 @@ Generating visual mockups of the proposed design... (say "skip" if you don't nee
 
 ```bash
 eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)"
-_DESIGN_DIR=~/.gstack/projects/$SLUG/designs/mockup-$(date +%Y%m%d)
+_DESIGN_DIR="$HOME/.gstack/projects/$SLUG/designs/mockup-$(date +%Y%m%d)"
 mkdir -p "$_DESIGN_DIR"
 echo "DESIGN_DIR: $_DESIGN_DIR"
 ```