fix(growth,hands): 穷尽审计后 3 项修复 — browser 文档注释 + experience_store warn 日志 + identity 数字更正

- browser.rs: 过时 doc comment pending_execution → delegated_to_frontend
- experience_store.rs: merge 反序列化失败时 warn!() + fallback 覆写
- wiki/log.md: identity_patterns 43→54 更正

crates/zclaw-growth/src/experience_store.rs

@@ -126,7 +126,16 @@ impl ExperienceStore {
 
         // If an experience with this URI already exists, merge instead of overwrite.
         if let Some(existing_entry) = self.viking.get(&uri).await? {
-            if let Ok(existing) = serde_json::from_str::<Experience>(&existing_entry.content) {
+            let existing = match serde_json::from_str::<Experience>(&existing_entry.content) {
+                Ok(e) => e,
+                Err(e) => {
+                    warn!("[ExperienceStore] Failed to deserialize existing experience at {}: {}, overwriting", uri, e);
+                    // Fall through to store new experience as overwrite
+                    self.write_entry(&uri, exp).await?;
+                    return Ok(());
+                }
+            };
+            {
                 let merged = Experience {
                     id: existing.id.clone(),
                     reuse_count: existing.reuse_count + 1,

crates/zclaw-hands/src/hands/browser.rs

@@ -1,7 +1,7 @@
 //! Browser Hand - Web automation capabilities (TypeScript delegation)
 //!
 //! **Architecture note (M3-02):** This Rust Hand is a **schema validator and passthrough**.
-//! Every action returns `{"status": "pending_execution"}` — no real browser work happens here.
+//! Every action returns `{"status": "delegated_to_frontend"}` — no real browser work happens here.
 //!
 //! The actual execution path is:
 //! 1. Frontend `HandsPanel.tsx` intercepts browser hands → routes to `BrowserHandCard`