chore(sleep): English-only across the engine, plugins, and docs

Remove every non-ASCII/CJK character for a professional open-source repo:
  - harvest.py: drop hardcoded Chinese feedback phrases; add an env-based
    extensibility hook (SKILLOPT_SLEEP_NEG_FEEDBACK / _POS_FEEDBACK) so any
    locale can be added without baking one in. Verified with a German example.
  - rollout.py / consolidate.py: English comments.
  - README.md section heading + anchor, CONTROLLABLE_DREAMING.md, plugin.json,
    marketplace.json (also fixed stale path skillopt-sleep-plugin ->
    plugins/claude-code), SKILL.md: English only.
  - Remove the internal WAKE_UP_SUMMARY.md note (not user-facing, not referenced).

Verified: zero CJK chars remain anywhere; 29 tests pass.

Co-Authored-By: Claude Opus 4 <noreply@anthropic.com>

plugins/claude-code/.claude-plugin/marketplace.json

@@ -9,7 +9,7 @@
   "plugins": [
     {
       "name": "skillopt-sleep",
-      "description": "Nightly offline self-evolution: harvest your past Claude Code sessions, replay recurring tasks on your own API budget, and consolidate what the agent learns into validated CLAUDE.md memory and SKILL.md skills — behind a held-out gate, staged for your review.越用越好用. Synthesizes SkillOpt (validation-gated skill optimization), Claude Dreams (offline memory consolidation), and agent sleep/consolidation.",
+      "description": "Nightly offline self-evolution: harvest your past Claude Code sessions, replay recurring tasks on your own API budget, and consolidate what the agent learns into validated CLAUDE.md memory and SKILL.md skills, behind a held-out gate, staged for your review. Synthesizes SkillOpt (validation-gated skill optimization), Claude Dreams (offline memory consolidation), and agent sleep/consolidation.",
       "author": {
         "name": "Yifan Yang"
       },
@@ -17,7 +17,7 @@
       "source": {
         "source": "git-subdir",
         "url": "https://github.com/microsoft/SkillOpt.git",
-        "path": "skillopt-sleep-plugin",
+        "path": "plugins/claude-code",
         "ref": "main"
       },
       "homepage": "https://github.com/microsoft/SkillOpt"

plugins/claude-code/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "skillopt-sleep",
-  "description": "Give your local Claude agent a nightly 'sleep cycle': it reviews your past sessions offline, replays recurring tasks on your own API budget, and consolidates what it learns into validated memory (CLAUDE.md) and skills (SKILL.md).越用越好用 — gets better the more you use it. Synthesizes SkillOpt (validation-gated skill optimization), Claude Dreams (offline memory consolidation), and agent sleep/consolidation.",
+  "description": "Give your local Claude agent a nightly 'sleep cycle': it reviews your past sessions offline, replays recurring tasks on your own API budget, and consolidates what it learns into validated memory (CLAUDE.md) and skills (SKILL.md) so it gets better the more you use it. Synthesizes SkillOpt (validation-gated skill optimization), Claude Dreams (offline memory consolidation), and agent sleep/consolidation.",
   "version": "0.1.0",
   "author": {
     "name": "Yifan Yang",

plugins/claude-code/skills/skillopt-sleep/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: skillopt-sleep
-description: "Use when the user wants their Claude agent to self-improve from past usage, asks about a nightly/offline 'sleep' or 'dream' cycle, memory/skill consolidation, or says things like '让 agent 越用越好用', 'review my past sessions', 'learn my preferences', 'consolidate what you learned', 'run the sleep cycle', or wants to schedule offline self-optimization. Drives the skillopt_sleep engine: harvest past sessions → mine recurring tasks → replay offline → consolidate validated CLAUDE.md/SKILL.md behind a held-out gate."
+description: "Use when the user wants their Claude agent to self-improve from past usage, asks about a nightly/offline 'sleep' or 'dream' cycle, memory/skill consolidation, or says things like 'make my agent better the more I use it', 'review my past sessions', 'learn my preferences', 'consolidate what you learned', 'run the sleep cycle', or wants to schedule offline self-optimization. Drives the skillopt_sleep engine: harvest past sessions -> mine recurring tasks -> replay offline -> consolidate validated CLAUDE.md/SKILL.md behind a held-out gate."
 ---
 
 # SkillOpt-Sleep: offline self-evolution for a local Claude agent
@@ -24,7 +24,7 @@ It synthesizes three ideas:
 ## When to use this skill
 
 Trigger when the user wants any of:
-- "make my agent learn from how I use it" / "越用越好用" / "remember my preferences across sessions"
+- "make my agent learn from how I use it" / "get better the more I use it" / "remember my preferences across sessions"
 - a nightly/scheduled or on-demand **offline self-improvement / dream / sleep** run
 - to **review past sessions/trajectories** and distill recurring tasks
 - to **consolidate** feedback into `CLAUDE.md` or a managed skill