fix: Fix ManagedBrowser constructor and Windows encoding issues

[yerik515]

This commit fixes two critical issues in the CLI browser management:

1. ManagedBrowser Constructor Error: Fixed 'NoneType' object has no attribute 'browser_type' error

   • Updated BrowserProfiler.launch_builtin_browser() and launch_standalone_browser() methods
   • Now properly creates BrowserConfig objects before passing to ManagedBrowser constructor
   • Resolves issue where ManagedBrowser expected browser_config parameter but received individual parameters

2. Windows Encoding Error: Fixed 'gbk' codec can't encode character '\u2139' error

   • Replaced Unicode info symbol (ℹ) with ASCII-compatible 'i' in async_logger.py and utils.py
   • Ensures compatibility with Windows command prompt and various terminal encodings
   • Maintains functionality while improving cross-platform compatibility

Files Changed:

• crawl4ai/browser_profiler.py: Updated ManagedBrowser instantiation
• crawl4ai/async_logger.py: Replaced Unicode symbols with ASCII
• crawl4ai/utils.py: Replaced Unicode symbols with ASCII

Testing:

• Verified 'crwl browser start/stop/status' commands work correctly
• Tested basic crawling functionality with various output formats
• Confirmed fixes work on Windows WSL environment

Fixes issues preventing users from using browser management CLI commands on Windows systems.

Summary

Please include a summary of the change and/or which issues are fixed.

eg: Fixes #123 (Tag GitHub issue numbers in this format, so it automatically links the issues with your PR)

List of files changed and why

eg: quickstart.py - To update the example as per new changes

How Has This Been Tested?

Please describe the tests that you ran to verify your changes.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added/updated unit tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Summary by CodeRabbit

• Style

  • Updated log and message icons for "INFO" and "NOTICE" tags to use the lowercase letter "i" instead of the previous information symbol.

• Refactor

  • Improved browser configuration management by encapsulating browser parameters into a dedicated configuration object for internal processes.

[coderabbitai]

Walkthrough

The changes update log and message icons from the Unicode "ℹ" to the ASCII "i" in both logging and utility message functions. Additionally, browser instantiation is refactored to use a BrowserConfig object for configuration encapsulation, replacing direct parameter passing in the browser profiler module.

Changes

File(s)	Change Summary
crawl4ai/async_logger.py, crawl4ai/utils.py	Changed log/message icon for "INFO"/"NOTICE" from "ℹ" to "i".
crawl4ai/browser_profiler.py	Refactored browser instantiation to use a BrowserConfig object instead of passing parameters directly.

Sequence Diagram(s)

sequenceDiagram
    participant Caller
    participant BrowserProfiler
    participant BrowserConfig
    participant ManagedBrowser

    Caller->>BrowserProfiler: launch_standalone_browser/launch_builtin_browser()
    BrowserProfiler->>BrowserConfig: Create config with params
    BrowserProfiler->>ManagedBrowser: Instantiate with BrowserConfig and logger
    ManagedBrowser-->>BrowserProfiler: ManagedBrowser instance
    BrowserProfiler-->>Caller: Return ManagedBrowser instance

Loading

Assessment against linked issues

Objective	Addressed	Explanation
Timeout setting (#123)	❌	No timeout-related logic or configuration is introduced.

Poem

In the land of code, a change so slight,
"ℹ" becomes "i", now ASCII takes flight.
Browsers refactored, configs in hand,
Cleaner and tidier, just as we planned.
The rabbit hops on, with a cheerful cheer,
For code that's simple, and changes clear! 🐇

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between b4bb0cc and bd24094.

📒 Files selected for processing (3)

• crawl4ai/async_logger.py (1 hunks)
• crawl4ai/browser_profiler.py (2 hunks)
• crawl4ai/utils.py (1 hunks)

🔇 Additional comments (5)

crawl4ai/utils.py (1)

445-446: Use ASCII "i" for info box prefix
Replaced the Unicode ℹ with ASCII "i" to prevent Windows GBK encoding errors and keep styling consistent.

crawl4ai/async_logger.py (2)

93-93: Use ASCII "i" for INFO log icon
Switched the INFO icon from ℹ to "i" for reliable display on Windows and other terminals.

---

98-98: Use ASCII "i" for NOTICE log icon
Aligned the NOTICE icon with INFO by using "i", ensuring consistent cross-platform encoding.

crawl4ai/browser_profiler.py (2)

618-631: LGTM! Critical constructor fix implemented correctly.

The refactoring properly encapsulates browser configuration into a BrowserConfig object before passing it to ManagedBrowser. This fixes the constructor error where individual parameters were being passed instead of the expected browser_config parameter.

The implementation correctly maps method parameters to the BrowserConfig constructor and maintains the same functionality.

---

817-830: LGTM! Consistent implementation of the constructor fix.

This section applies the same refactoring pattern as the previous method, creating a BrowserConfig object with appropriate parameters before passing it to ManagedBrowser. The consistency between both methods is excellent.

The fix properly addresses the constructor signature mismatch that was causing the NoneType attribute error.

✨ Finishing Touches

• 📝 Generate Docstrings

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