feat: enhance snapshot usability by reducing AI cognitive load of semantic noise and -C flag (#968)

* fix: add ref for cursor-interactive content roles

* fix: format

* feat: always include cursor-interactive elements in snapshot, -C is deprecated

* feat: process StaticText aggregation and deduplication

* update test

* clean up

* fix: escape text of elements in snapshot

* fix: redundant slicing

* fix: cargo fmt

* feat: deduplicate redundant StaticText

---------

Co-authored-by: 羲洋 <lipengyang.lpy@alibaba-inc.com>

cli/src/output.rs

@@ -1459,7 +1459,6 @@ Designed for AI agents to understand page structure.
 
 Options:
   -i, --interactive    Only include interactive elements
-  -C, --cursor         Include cursor-interactive elements (cursor:pointer, onclick, tabindex)
   -c, --compact        Remove empty structural elements
   -d, --depth <n>      Limit tree depth
   -s, --selector <sel> Scope snapshot to CSS selector
@@ -1471,7 +1470,6 @@ Global Options:
 Examples:
   agent-browser snapshot
   agent-browser snapshot -i
-  agent-browser snapshot -i -C         # Interactive + cursor-interactive elements
   agent-browser snapshot --compact --depth 5
   agent-browser snapshot -s "#main-content"
 "##