Update public documentation for Golem 1.6

[vigoo]

Summary

Updates the public documentation for Golem 1.6 and refreshes SDK examples and generated how-to guides against the current platform and SDK contracts.

Added

• A permissions and cards concept guide covering wallets, grants, transfer, installation, revocation, and authorization behavior
• Current CLI documentation for API tokens, permission shares, and cards
• Account usage and limits documentation, including billing dimensions, monthly usage, and resource overrides
• A Golem-native tools concept guide explaining permission integration, capability-scoped sandboxing, durable middleware, secrets, and tool-boundary choices
• A practical tool authoring and lifecycle guide
• Custom HTTP handlers and routers documentation
• External Durable Streams guest SDK documentation
• Tool definition, invocation, middleware, and permission-card how-to guides for TypeScript, Rust, Scala, and MoonBit
• Effect TypeScript examples throughout the core SDK documentation

Updated

• Added Effect TypeScript to all core language-tab groups and synchronized tab selection across pages
• Updated TypeScript, Rust, Scala, and MoonBit snippets to current SDK APIs
• Replaced obsolete TypeScript BaseAgent examples with schema-driven agent definitions
• Updated Rust scheduling, snapshot, fork, runtime API, and wasm32-wasip2 guidance
• Updated Scala and MoonBit snapshot, streaming, HTTP, multimodal, package, and RPC guidance
• Removed unsupported Scala and MoonBit unstructured text/binary examples where no current API exists
• Updated application build/deploy and code-first HTTP API workflows
• Replaced removed project-sharing and project-selection documentation
• Updated plugin lifecycle, deployment topology, persistence ownership, CLI flags, and update behavior
• Updated bridge, MCP, authentication, REPL, quickstart, type mapping, observability, RPC, RDBMS, transaction, webhook, and WebSocket documentation
• Updated skill source files and regenerated the public how-to guide catalog and navigation

Validation

• Oracle correctness and documentation-style approval for every changed page and the integrated diff
• Docs lint, formatting, type checking, link checking, and version checks
• Generated skill documentation idempotence check
• Full production documentation build
• Adversarial bug-finder review

Resolves GOL-570

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[github-actions]

📖 Docs preview: https://docs-9zxw3tsgy-golem-cloud.vercel.app

Built from commit 3e3f287674278bce489ec9d1c6b281d9de542ee8 by docs.yaml.