fix: calimero sdk guide update

[frdomovic]

Note

Aligns the SDK guide with current APIs and patterns.

• CRDT examples: Update Vector (use push/update/pop), Counter (Counter<true>, value() returns Result), and LwwRegister (set no longer returns Result).
• Events: Use #[app::state(emits = for<'a> Event<'a>)]; switch map values to LwwRegister<String>; add Borsh derives/attrs.
• Private storage: Replace private_storage::entry with #[app::private] struct and private_load_or_default() pattern using UnorderedMap.
• Patterns: Add derives/inits; use get_mut for counters; adjust value() return types (e.g., u64) and entry(...).or_insert_with(...)? where needed.
• Minor doc tweaks and consistency fixes across examples.

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Project	Deployment	Review	Updated (UTC)
docs	Ready	Preview, Comment	Jan 26, 2026 4:09pm