Implement smart wait (auto-detect element ready)

[g3Bg2]

Description:
Automatically detect when elements are ready instead of fixed waits.

Tasks:

• Detect element visibility
• Detect element stability
• Add loading indicators detection
• Implement timeout logic
• Add max wait configuration
• Test on dynamic sites
• Document behaviour

Acceptance Criteria:

• Elements detected accurately
• No premature execution
• Timeout prevents hangs
• Dynamic content handled