[STG-1680] docs: show bb CLI usage alongside curl in search, fetch, functions skills

[shrey150]

Summary

• Adds bb CLI examples to search, fetch, and functions skills so agents try the CLI first
• CLI examples appear before cURL in SKILL.md, REFERENCE.md, and EXAMPLES.md
• Adds "The CLI is the preferred interface" section to browserbase-cli SKILL.md with a mapping (bb search vs curl, bb fetch vs curl, etc.)
• Removes redundant bullet from browserbase-cli that sent agents away to the fetch skill

Test plan

• Verify bb search, bb fetch, bb functions invoke commands shown match current CLI flags
• Confirm no existing cURL or SDK examples were removed — only CLI alternatives added alongside them

🤖 Generated with Claude Code

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Note

Low Risk
Low risk documentation-only updates that reframe examples around the bb CLI; the main risk is minor confusion if any referenced flags drift from the current CLI.

Overview
Updates the Browserbase fetch, search, and functions skill docs to prefer the bb CLI over raw API curl/SDK examples, rewriting examples and references around bb fetch, bb search, and bb functions invoke (including --output, --num-results, --allow-redirects, --proxies, and --check-status).

Adds an explicit “CLI is the preferred interface” section to browserbase-cli/SKILL.md mapping common API endpoints to their bb equivalents, and trims/adjusts related guidance and security notes (e.g., --allow-insecure-ssl).

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