Update docs to reflect all MESA changes

[Shigoto-dev19]

Partly closes o1-labs/o1js#2639.

Summary

Updates o1js documentation to reflect all Mesa changes across all relevant pages.

Changes

• State fields: 8 → 32 fields per zkApp account
• Slot time: 180 seconds → 90 seconds
• Account updates: Cost-based model (~7) → Segment-count model (16 segments max)
• Events/Actions: 100 field elements per tx → 1024 field elements per tx; removed 16 field per-event/action limit

What's Updated

• zkApp introduction, events, actions, permissions, deployment guides
• On-chain preconditions documentation
• API reference for Permissions interface
• Tutorial guides (Angular integration)
• Transaction inclusion time estimates adjusted for new slot time

References

• MIP-0006: Slot Reduction to 90s
• MIP-0007: Increase State Size Limit
• MIP-0008: Increase Events/Actions Limit
• MIP-0009: Increase zkApp Account Update Limit
• o1js/develop-3.0

TODO

• Regenerate API docs from o1js 3.0: Once o1js 3.0 is released, the auto-generated API reference files (e.g., TokenContract.MAX_ACCOUNT_UPDATES, state-related constants) should be updated.
• Versioned docs: Historical versions (2.4.0, 2.5.0) were intentionally not updated as they represent documentation for those specific o1js versions.

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Project	Deployment	Actions	Updated (UTC)
o1js-documentation-site	Ready	Preview, Comment	Feb 5, 2026 0:10am

[45930]

We should create a new docs version for this! I can help :)

We shouldn't merge it into the current version, because then it will be locked v2.xx, rather than v3