docs: v3.1 minor cleanup (Proofs page, address encoding, constants)

[thephez]

Summary

Batch of v3.1 doc updates — low-risk additions and cleanups against the v3.1-dev surface:

• Proofs explanation page (new) — covers the two-layer proof model (GroveDB Merkle + Tenderdash consensus), what can be proven, the new aggregate proof primitives (count / sum / average, #3661), and asset-lock proofs. Wired into the docs/index.md toctree.
• PlatformAddress encoding (#3059 BREAKING) — docs/protocol-ref/address-system.md clarified for the new HRPs (dash / tdash) and bech32m payload structure, with a note on the two distinct byte encodings (user-facing bech32m vs. internal GroveDB storage keys). Refreshed source-line anchors against current rs-dpp line numbers.
• max_asset_lock_transaction_inputs (#3491) — added to the Identity Create Fees table in docs/protocol-ref/protocol-constants.md. New protocol-v3 limit (100) to prevent stuck funds.
• feature-flags system contract removed (#3522) — dropped the row from docs/explanations/platform-protocol-data-trigger.md and the sample dashmate setup output in the masternode tutorial.
• Sidebar regenerated for the new Proofs page.

Preview build: https://dash-docs-platform--148.org.readthedocs.build/en/148/

Summary by CodeRabbit

• New Features

  • Added comprehensive documentation on Dash Platform cryptographic proofs, covering proof models, verification flows, and asset lock proofs.

• Documentation

  • Updated navigation to include new Proofs section.
  • Clarified Platform Address bech32m encoding specifications.
  • Updated protocol constants documentation.
  • Refreshed masternode setup tutorial examples.
  • Added navigation links for example applications.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: a120dfe9-b834-41dd-9621-52f7e92dbb4d

📥 Commits

Reviewing files that changed from the base of the PR and between 1da2e10 and 428e6dc.

📒 Files selected for processing (1)

• docs/protocol-ref/protocol-constants.md

📝 Walkthrough

Walkthrough

This PR updates Dash Platform documentation to introduce comprehensive cryptographic proofs documentation, clarify Platform Address bech32m encoding specifications, remove deprecated Feature Flags system contracts, and extend sidebar navigation with new example applications and Proofs links.

Changes

Platform Documentation Updates

Layer / File(s)	Summary
Proofs documentation and navigation registration docs/explanations/proofs.md, docs/index.md, _templates/sidebar-main.html	New comprehensive Proofs page explains two-layer architecture combining GroveDB Merkle proofs with Tenderdash BLS signatures, client verification flow via DAPI, supported proof types across identities/contracts/documents/tokens/state, aggregate proof primitives, asset lock proofs, and related topics. Page is registered in toctree and sidebar.
Platform address and protocol constant specifications docs/protocol-ref/address-system.md, docs/protocol-ref/protocol-constants.md	Updated Platform Address documentation to clarify bech32m HRP (dash/tdash) encoding, distinguish user-facing type bytes from internal GroveDB bincode variants, and added inline variant/type-byte table. Added protocol v3 Identity Create Fees row for maximum Core transaction inputs in asset-lock transactions. Updated Address Constants to explicitly label bech32m variants.
Feature flags system contract deprecation docs/explanations/platform-protocol-data-trigger.md, docs/tutorials/node-setup/connect-to-a-network-dash-masternode.md	Removed Feature flags system-contract data trigger from platform-protocol-data-trigger.md table and corresponding example wizard registration output from masternode setup tutorial, reflecting contract deprecation.
Example applications sidebar navigation _templates/sidebar-main.html	Extended sidebar Example apps section with four new nested links: Dashnote, DashMint Lite, Dashnote Lite, and DashProof Lite.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

A rabbit hops through docs with glee, 🐰
Adding proofs for all to see!
With bech32m and assets locked tight,
The platform shines even more bright. ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main documentation updates: adding a Proofs explanation page, clarifying address encoding details, and updating protocol constants.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@docs/protocol-ref/protocol-constants.md`:
- Line 258: The table row currently labeled "Platform HRP (testnet)" and showing
the value "tdash" is misleading because "tdash" is used for all non-mainnet
networks (testnet, devnet, regtest), not just testnet; update that row's
label/description to say something like "Platform HRP (non‑mainnet:
testnet/devnet/regtest)" or similar, and ensure the value "tdash" remains and
the rs-dpp link is preserved so readers understand the broader non-mainnet
scope.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 34d23a1f-4f4e-4ab9-b1c1-f7573e59ce1e

📥 Commits

Reviewing files that changed from the base of the PR and between 4cb4104 and 1da2e10.

📒 Files selected for processing (7)

• _templates/sidebar-main.html
• docs/explanations/platform-protocol-data-trigger.md
• docs/explanations/proofs.md
• docs/index.md
• docs/protocol-ref/address-system.md
• docs/protocol-ref/protocol-constants.md
• docs/tutorials/node-setup/connect-to-a-network-dash-masternode.md

💤 Files with no reviewable changes (2)

• docs/explanations/platform-protocol-data-trigger.md
• docs/tutorials/node-setup/connect-to-a-network-dash-masternode.md