docs: convert core and prover docs to mdbook project and add CI

.github/workflows/deploy-core-docs.yml

@@ -0,0 +1,67 @@
+name: Deploy core docs
+
+on:
+  push:
+    branches:
+      - "main"
+    tags:
+      - "core-v*.*.*"
+    paths:
+      - 'docs/**'
+      - '.github/workflows/deploy-core-docs.yml'
+  pull_request:
+    paths:
+      - 'docs/**'
+      - '.github/workflows/deploy-core-docs.yml'
+  workflow_dispatch:
+    inputs:
+      ref:
+        description: "Branch, tag or commit to deploy the core docs. If empty, use the ref that triggered the workflow."
+        required: false
+        default: ""
+      version:
+        type: string
+        description: "Version of the documentation to deploy"
+        required: false
+        default: "latest"
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+
+  deploy-core-docs:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    env:
+      DOCS_DIR: 'docs'
+      PROJECT: 'core'
+      ENABLE_TESTS: false
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+        with:
+          ref: ${{ inputs.ref || '' }}
+
+      - name: Extract version from tag
+        if: startsWith(github.ref, 'refs/tags/')
+        id: extract-version
+        shell: 'bash -ex {0}'
+        run: |
+          TAG="${{ github.ref_name }}"
+          VERSION="${TAG#*-}"
+          echo "version=${VERSION}" >> "${GITHUB_OUTPUT}"
+
+      - name: Deploy core docs
+        uses: matter-labs/deploy-mdbooks@77856145362bf23834f2e54a44a928790c4bee7c # v1
+        with:
+          version: ${{ inputs.version || steps.extract-version.outputs.version || github.ref_name }}
+          docs-dir: ${{ env.DOCS_DIR }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          enable-tests: ${{ env.ENABLE_TESTS }}
+          project: ${{ env.PROJECT }}
+          deploy: ${{ github.event_name != 'pull_request' }}

.github/workflows/deploy-prover-docs.yml

@@ -0,0 +1,67 @@
+name: Deploy prover docs
+
+on:
+  push:
+    branches:
+      - "main"
+    tags:
+      - "prover-v*.*.*"
+    paths:
+      - 'prover/docs/**'
+      - '.github/workflows/deploy-prover-docs.yml'
+  pull_request:
+    paths:
+      - 'prover/docs/**'
+      - '.github/workflows/deploy-prover-docs.yml'
+  workflow_dispatch:
+    inputs:
+      ref:
+        description: "Branch, tag or commit to deploy the prover docs. If empty, use the ref that triggered the workflow."
+        required: false
+        default: ""
+      version:
+        type: string
+        description: "Version of the documentation to deploy"
+        required: false
+        default: "latest"
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+
+  deploy-prover-docs:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    env:
+      DOCS_DIR: 'prover/docs'
+      PROJECT: 'prover'
+      ENABLE_TESTS: false
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+        with:
+          ref: ${{ inputs.ref || '' }}
+
+      - name: Extract version from tag
+        if: startsWith(github.ref, 'refs/tags/')
+        id: extract-version
+        shell: 'bash -ex {0}'
+        run: |
+          TAG="${{ github.ref_name }}"
+          VERSION="${TAG#*-}"
+          echo "version=${VERSION}" >> "${GITHUB_OUTPUT}"
+
+      - name: Deploy prover docs
+        uses: matter-labs/deploy-mdbooks@77856145362bf23834f2e54a44a928790c4bee7c # v1
+        with:
+          version: ${{ inputs.version || steps.extract-version.outputs.version || github.ref_name }}
+          docs-dir: ${{ env.DOCS_DIR }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          enable-tests: ${{ env.ENABLE_TESTS }}
+          project: ${{ env.PROJECT }}
+          deploy: ${{ github.event_name != 'pull_request' }}

docs/.gitignore

@@ -0,0 +1 @@
+book

docs/book.toml

@@ -0,0 +1,27 @@
+[book]
+authors = ["ZKsync team"]
+language = "en"
+multilingual = false
+src = "src"
+title = "ZKsync Era Documentation"
+
+[output.html]
+smart-punctuation = true
+mathjax-support = true
+git-repository-url = "https://github.com/matter-labs/zksync-era/tree/main/docs"
+edit-url-template = "https://github.com/matter-labs/zksync-era/tree/main/docs/{path}"
+additional-js = ["js/version-box.js"]
+additional-css = ["css/version-box.css"]
+
+[output.html.playground]
+editable = true
+line-numbers = true
+
+[output.html.search]
+limit-results = 20
+use-boolean-and = true
+boost-title = 2
+boost-hierarchy = 2
+boost-paragraph = 1
+expand = true
+heading-split-level = 2

docs/css/version-box.css

@@ -0,0 +1,46 @@
+#version-box {
+    display: flex;
+    align-items: center;
+    margin-right: 15px; /* Space from the right side */
+    background-color: transparent; /* Make the box background transparent */
+}
+
+/* Base styles for the version selector */
+#version-selector {
+    background-color: transparent; /* Remove background color */
+    border: 1px solid #4a5568;     /* Subtle border */
+    border-radius: 4px;            /* Rounded edges */
+    padding: 5px 10px;             /* Padding inside dropdown */
+    font-size: 0.9em;
+    font-weight: normal;
+    outline: none;                 /* Removes default focus outline */
+    cursor: pointer;
+}
+
+/* Text color for dark themes */
+.theme-navy #version-selector,
+.theme-coal #version-selector {
+    color: #f7fafc; /* Light text color for dark backgrounds */
+}
+
+/* Text color for light theme */
+.theme-light #version-selector {
+    color: #333333; /* Dark text color for light background */
+}
+
+/* Hover effect for better user feedback */
+#version-selector:hover {
+    background-color: rgba(255, 255, 255, 0.1); /* Light hover effect */
+}
+
+/* Optional: Style for when the selector is focused */
+#version-selector:focus {
+    border-color: #63b3ed; /* Accent color for focused state */
+}
+
+.right-buttons {
+    display: flex;
+    flex-direction: row;     /* Aligns items in a row, left to right */
+    align-items: center;     /* Centers items vertically */
+    gap: 10px;               /* Adds space between items */
+}

docs/js/version-box.js

@@ -0,0 +1,61 @@
+document.addEventListener("DOMContentLoaded", function() {
+    // Get the base URL from the mdBook configuration
+    const baseUrl = document.location.origin + '/zksync-era/core';
+
+    // Function to create version selector
+    function createVersionSelector(versions) {
+        const versionSelector = document.createElement("select");
+        versionSelector.id = "version-selector";
+
+        // Get the current path
+        const currentPath = window.location.pathname;
+
+        // Iterate over the versions object
+        for (const [versionName, versionUrl] of Object.entries(versions)) {
+            const option = document.createElement("option");
+            option.value = versionUrl + '/';
+            option.textContent = versionName;
+
+            // Check if the current URL matches this option's value
+            if (currentPath.includes(option.value)) {
+                option.selected = true; // Set this option as selected
+            }
+
+            versionSelector.appendChild(option);
+        }
+
+        // Event listener to handle version change
+        versionSelector.addEventListener("change", function() {
+            const selectedVersion = versionSelector.value;
+            // Redirect to the selected version URL
+            window.location.href = '/zksync-era/core' + selectedVersion;
+        });
+
+        return versionSelector;
+    }
+
+    // Fetch versions from JSON file
+    fetch(baseUrl + '/versions.json')
+        .then(response => {
+            if (!response.ok) {
+                throw new Error('Network response was not ok ' + response.statusText);
+            }
+            return response.json();
+        })
+        .then(data => {
+            const versionSelector = createVersionSelector(data);
+            const nav = document.querySelector(".right-buttons");
+
+            if (nav) {
+                const versionBox = document.createElement("div");
+                versionBox.id = "version-box";
+                versionBox.appendChild(versionSelector);
+                nav.appendChild(versionBox); // Append to the .right-buttons container
+            } else {
+                console.error(".right-buttons element not found.");
+            }
+        })
+        .catch(error => {
+            console.error('There has been a problem with your fetch operation:', error);
+        });
+});

docs/src/README.md

@@ -0,0 +1,19 @@
+# Introduction
+
+Welcome to the documentation! This guide provides comprehensive insights into the architecture, setup, usage, and advanced features of ZKsync.
+
+## Documentation Structure
+
+- **Guides**: The Guides section is designed to help users at every level, from setup and development to advanced configuration and debugging techniques. It covers essential topics, including Docker setup, repository management, and architecture.
+
+- **Specs**: This section dives into the technical specifications of our system. Here, you’ll find detailed documentation on data availability, L1 and L2 communication, smart contract interactions, Zero-Knowledge proofs, and more. Each topic includes an in-depth explanation to support advanced users and developers.
+
+- **Announcements**: This section highlights important updates, announcements, and committee details, providing essential information to keep users informed on the latest changes.
+
+## Getting Started
+
+Feel free to explore each section according to your needs. This documentation is designed to be modular, so you can jump to specific topics or follow through step-by-step.
+
+---
+
+Thank you for using our documentation!

docs/src/SUMMARY.md

@@ -0,0 +1,82 @@
+# Summary
+
+[Introduction](README.md)
+
+# Guides
+
+- [Basic](guides/README.md)
+    - [Architecture](guides/architecture.md)
+    - [Build Docker](guides/build-docker.md)
+    - [Development](guides/development.md)
+    - [Launch](guides/launch.md)
+    - [Repositories](guides/repositories.md)
+    - [Setup Dev](guides/setup-dev.md)
+
+- [Advanced](guides/advanced/README.md)
+    - [Local initialization](guides/advanced/01_initialization.md)
+    - [Deposits](guides/advanced/02_deposits.md)
+    - [Withdrawals](guides/advanced/03_withdrawals.md)
+    - [Contracts](guides/advanced/04_contracts.md)
+    - [Calls](guides/advanced/05_how_call_works.md)
+    - [Transactions](guides/advanced/06_how_transaction_works.md)
+    - [Fee Model](guides/advanced/07_fee_model.md)
+    - [L2 Messaging](guides/advanced/08_how_l2_messaging_works.md)
+    - [Pubdata](guides/advanced/09_pubdata.md)
+    - [Pubdata with Blobs](guides/advanced/10_pubdata_with_blobs.md)
+    - [Bytecode compression](guides/advanced/11_compression.md)
+    - [EraVM intro](guides/advanced/12_alternative_vm_intro.md)
+    - [ZK Intuition](guides/advanced/13_zk_intuition.md)
+    - [ZK Deeper Dive](guides/advanced/14_zk_deeper_overview.md)
+    - [Prover Keys](guides/advanced/15_prover_keys.md)
+    - [Advanced Debugging](guides/advanced/90_advanced_debugging.md)
+    - [Docker and CI](guides/advanced/91_docker_and_ci.md)
+
+# External Node
+
+- [External node](guides/external-node/01_intro.md)
+    - [Quick Start](guides/external-node/00_quick_start.md)
+    - [Configuration](guides/external-node/02_configuration.md)
+    - [Running](guides/external-node/03_running.md)
+    - [Observability](guides/external-node/04_observability.md)
+    - [Troubleshooting](guides/external-node/05_troubleshooting.md)
+    - [Components](guides/external-node/06_components.md)
+    - [Snapshots Recovery](guides/external-node/07_snapshots_recovery.md)
+    - [Pruning](guides/external-node/08_pruning.md)
+    - [Treeless Mode](guides/external-node/09_treeless_mode.md)
+
+# Specs
+
+- [Introduction](specs/introduction.md)
+    - [Overview](specs/overview.md)
+    - [Blocks and Batches](specs/blocks_batches.md)
+    - [L1 Smart Contracts](specs/l1_smart_contracts.md)
+- [Data Availability](specs/data_availability/overview.md)
+    - [Pubdata](specs/data_availability/pubdata.md)
+    - [Compression](specs/data_availability/compression.md)
+    - [Reconstruction](specs/data_availability/reconstruction.md)
+    - [Validium ZK Porter](specs/data_availability/validium_zk_porter.md)
+- [L1 L2 Communication](specs/l1_l2_communication/overview_deposits_withdrawals.md)
+    - [L1 to L2](specs/l1_l2_communication/l1_to_l2.md)
+    - [L2 to L1](specs/l1_l2_communication/l2_to_l1.md)
+- [Prover](specs/prover/overview.md)
+    - [Getting Started](specs/prover/getting_started.md)
+    - [ZK Terminology](specs/prover/zk_terminology.md)
+    - [Function Check if Satisfied](specs/prover/boojum_function_check_if_satisfied.md)
+    - [Gadgets](specs/prover/boojum_gadgets.md)
+    - [Circuit Testing](specs/prover/circuit_testing.md)
+    - [Circuits Overview](specs/prover/circuits/overview.md)
+- [ZK Chains](specs/zk_chains/overview.md)
+    - [Gateway](specs/zk_chains/gateway.md)
+    - [Interop](specs/zk_chains/interop.md)
+    - [Shared Bridge](specs/zk_chains/shared_bridge.md)
+- [ZK EVM](specs/zk_evm/vm_overview.md)
+    - [Account Abstraction](specs/zk_evm/account_abstraction.md)
+    - [Bootloader](specs/zk_evm/bootloader.md)
+    - [Fee Model](specs/zk_evm/fee_model.md)
+    - [Precompiles](specs/zk_evm/precompiles.md)
+    - [System Contracts](specs/zk_evm/system_contracts.md)
+
+# Announcements
+
+- [Announcements](announcements/README.md)
+    - [Attester Committee](announcements/attester_commitee.md)

docs/src/guides/README.md

@@ -0,0 +1,12 @@
+# ZKsync basic guides
+
+This section contains basic guides that aim to explain the ZKsync ecosystem in an easy to grasp way.
+
+## Table of Contents
+
+- [Architecture](./architecture.md)
+- [Build Docker](./build-docker.md)
+- [Development](./development.md)
+- [Launch](./launch.md)
+- [Repositories](./repositories.md)
+- [Setup Dev](./setup-dev.md)

docs/guides/advanced/README.md → docs/src/guides/advanced/README.md

@@ -22,7 +22,7 @@ way.
 - [Prover keys](./15_prover_keys.md)
 
 Additionally, there are a few articles that cover specific topics that may be useful for developers actively working on
-`zksync-era` repo.
+`zksync-era` repo:
 
 - [Advanced debugging](./90_advanced_debugging.md)
 - [Docker and CI](./91_docker_and_ci.md)