Merge origin/main (v1.64.1.0) into garrytan/time-attack-fork-review

The code-smell wave refactored the tunnel start into the staged
startTunnel helper; the merge adopts that structure and threads this
branch's truthful consent strings through its consent parameter (the
receipt now names the isPairAgentEnabled gate at both call sites). The
eng-review PTY warmup takes both improvements: main's resolveClaudeBinary
fallback and this branch's resolveEvalModel kind. Resolver imports
union; carve budgets take the larger of both waves' measured values
(parity suite green on the merged tree); conflicted generated SKILL.md
files regenerated from resolved sources. VERSION stays 1.65.0.0 over
main's 1.64.1.0; CHANGELOG stacks 1.65.0.0 > 1.64.1.0 > 1.64.0.0.

skillify/SKILL.md

@@ -1,5 +1,6 @@
 ---
 name: skillify
+preamble-tier: 2
 version: 1.0.0
 description: Codify the most recent successful /scrape flow into a permanent browser-skill on disk. (gstack)
 allowed-tools:
@@ -733,24 +734,6 @@ Write (only after confirmation for free-form):
 
 Exit code 2 = rejected as not user-originated; do not retry. On success: "Set `<id>` → `<preference>`. Active immediately."
 
-## Repo Ownership — See Something, Say Something
-
-`REPO_MODE` controls how to handle issues outside your branch:
-- **`solo`** — You own everything. Investigate and offer to fix proactively.
-- **`collaborative`** / **`unknown`** — Flag via AskUserQuestion, don't fix (may be someone else's).
-
-Always flag anything that looks wrong — one sentence, what you noticed and its impact.
-
-## Search Before Building
-
-Before building anything unfamiliar, **search first.** See `~/.claude/skills/gstack/ETHOS.md`.
-- **Layer 1** (tried and true) — don't reinvent. **Layer 2** (new and popular) — scrutinize. **Layer 3** (first principles) — prize above all.
-
-**Eureka:** When first-principles reasoning contradicts conventional wisdom, name it and log:
-```bash
-jq -n --arg ts "$(date -u +%Y-%m-%dT%H:%M:%SZ)" --arg skill "SKILL_NAME" --arg branch "$(git branch --show-current 2>/dev/null)" --arg insight "ONE_LINE_SUMMARY" '{ts:$ts,skill:$skill,branch:$branch,insight:$insight}' >> ~/.gstack/analytics/eureka.jsonl 2>/dev/null || true
-```
-
 ## Completion Status Protocol
 
 When completing a skill workflow, report status using one of:

skillify/SKILL.md.tmpl

@@ -1,5 +1,6 @@
 ---
 name: skillify
+preamble-tier: 2
 version: 1.0.0
 description: |
   Codify the most recent successful /scrape flow into a permanent