📝 docs: adicionar relatório de imagens ausentes

Documenta todas as páginas que referenciam figuras/diagramas mas estão
sem os arquivos de imagem correspondentes.

- Lista ~25+ figuras ausentes em 11 páginas
- Identifica inconsistências na organização de diretórios de imagens
- Fornece recomendações para padronização
- Prioriza criação de imagens por capítulo

Páginas afetadas:
- Capítulo 3.3.x: estruturas de dados mutáveis (16 figuras)
- Capítulo 3.5.x: streams e avaliação atrasada (4+ figuras)
- Capítulo 4.1.x: avaliador metacircular (5 figuras)

Author: claude

MISSING_IMAGES.md

@@ -0,0 +1,212 @@
+# Pages Missing Images - SICP JavaScript Translation
+
+## Executive Summary
+
+This report identifies all pages in the SICP JavaScript translation that reference figures/diagrams but are missing the corresponding image files.
+
+**Total Missing Images: ~25+ figures across 11 pages**
+
+---
+
+## Chapter 3: Modularity, Objects, and State
+
+### 3.3.1 Mutable List Structure
+**File:** `docs/chapter-3/3.3.1.mdx`
+**Missing Images (6):**
+- **Figure 3.12** - Initial box-and-pointer diagram showing lists x and y
+- **Figure 3.13** - Effect of `set_head(x, y)` operation
+- **Figure 3.14** - Effect of `const z = pair(y, tail(x))` operation
+- **Figure 3.15** - Effect of `set_tail(x, y)` operation
+- **Figure 3.16** - Sharing structure in `z1`
+- **Figure 3.17** - Alternative structure created by different operations
+
+**Context:** These diagrams illustrate mutable list operations and box-and-pointer representations.
+
+---
+
+### 3.3.2 Representing Queues
+**File:** `docs/chapter-3/3.3.2.mdx`
+**Missing Images (3):**
+- **Figure 3.18** - Queue representation with `front_ptr` and `rear_ptr` pointers
+- **Figure 3.19** - Result of `insert_queue` operation showing pointer modifications
+- **Figure 3.20** - Result of `delete_queue` operation showing pointer modifications
+
+**Context:** Queue data structure diagrams showing how front and rear pointers manage the queue.
+
+---
+
+### 3.3.3 Representing Tables
+**File:** `docs/chapter-3/3.3.3.mdx`
+**Missing Images (2):**
+- **Figure 3.21** - Box-and-pointer diagram of a one-dimensional table
+- **Figure 3.22** - Box-and-pointer diagram of a two-dimensional table with subtables
+
+**Context:** Table data structure representations showing headed lists and nested structures.
+
+---
+
+### 3.3.4 Digital Circuit Simulator
+**File:** `docs/chapter-3/3.3.4.mdx`
+**Missing Images (3):**
+- **Figure 3.25** - Half-adder circuit diagram
+- **Figure 3.26** - Full-adder circuit diagram
+- **Figure 3.27** - Ripple-carry adder circuit diagram
+
+**Context:** Digital logic circuit diagrams showing gate connections and signal flow.
+
+---
+
+### 3.3.5 Constraint Propagation
+**File:** `docs/chapter-3/3.3.5.mdx`
+**Missing Images (1):**
+- **Figure 3.28** - Constraint network diagram for Celsius-Fahrenheit temperature converter
+
+**Context:** Shows constraint boxes (multipliers, adders, constants) connected by connectors.
+
+---
+
+### 3.5.3 Exploiting the Stream Paradigm
+**File:** `docs/chapter-3/3.5.3.mdx`
+**Missing Images (1+):**
+- Signal processing diagram for integrator (referenced in text at line 154)
+
+**Context:** Signal flow diagrams for stream-based computation.
+
+---
+
+### 3.5.4 Streams and Delayed Evaluation
+**File:** `docs/chapter-3/3.5.4.mdx`
+**Missing Images (3+):**
+- Feedback loop diagram for differential equation solver
+- RLC circuit diagram (resistor, capacitor, inductor in series)
+- Signal flow diagram representing system of differential equations
+
+**Context:** Circuit diagrams and signal flow for solving differential equations with streams.
+
+---
+
+## Chapter 4: Metalinguistic Abstraction
+
+### 4.1 The Metacircular Evaluator
+**File:** `docs/chapter-4/4.1.md`
+**Missing Images (1):**
+- **Figure 4.1** - Eval-apply cycle diagram
+
+**Context:** Shows the circular relationship between `evaluate` and `apply` functions. Referenced at lines 13 and 21.
+
+---
+
+### 4.1.2 Representing Expressions
+**File:** `docs/chapter-4/4.1.2.mdx`
+**Missing Images (1):**
+- Abstraction barrier diagram for syntax representation
+
+**Context:** Shows layers separating evaluator from list representation and string representation.
+
+---
+
+### 4.1.5 Data as Programs
+**File:** `docs/chapter-4/4.1.5.mdx`
+**Missing Images (2):**
+- **Figure 4.2** - `/img/chapter-4/ch4-Z-G-2.svg` - Factorial program as abstract machine
+- **Figure 4.3** - `/img/chapter-4/ch4-Z-G-3.svg` - Evaluator emulating factorial machine
+
+**Status:** These images are referenced in `<Figure>` tags but the files don't exist. The directory `static/img/chapter-4/` doesn't exist yet.
+
+---
+
+### 4.4.4 Implementing the Query System
+**File:** `docs/chapter-4/4.4.4.mdx`
+**Missing Images (2):**
+- **Figure 4.5** - Diagram showing processing of AND queries with frame streams
+- **Figure 4.6** - Diagram showing processing of OR queries with frame streams
+
+**Context:** Data flow diagrams for query language implementation.
+
+---
+
+## Summary by Chapter
+
+| Chapter | Section | Missing Figures | Priority |
+|---------|---------|----------------|----------|
+| 3.3.1 | Mutable Lists | 6 | High |
+| 3.3.2 | Queues | 3 | High |
+| 3.3.3 | Tables | 2 | High |
+| 3.3.4 | Digital Circuits | 3 | High |
+| 3.3.5 | Constraints | 1 | High |
+| 3.5.3 | Streams | 1+ | Medium |
+| 3.5.4 | Delayed Evaluation | 3+ | Medium |
+| 4.1 | Evaluator | 1 | High |
+| 4.1.2 | Syntax | 1 | Medium |
+| 4.1.5 | Data as Programs | 2 | High |
+| 4.4.4 | Query System | 2 | Medium |
+| **TOTAL** | **11 pages** | **~25+** | |
+
+---
+
+## Recommended Next Steps
+
+1. **Create missing directory:**
+   ```bash
+   mkdir -p static/img/chapter-4
+   ```
+
+2. **Source images from original SICP.js:**
+   - Many of these figures likely exist in the [source SICP JS repository](https://github.com/source-academy/sicp)
+   - Can be adapted from [HTML5/EPUB3 version](https://github.com/sarabander/sicp)
+
+3. **Priority order for image creation:**
+   - **Priority 1:** Chapter 3.3.x diagrams (most critical for understanding data structures)
+   - **Priority 2:** Chapter 4.1.x diagrams (essential for evaluator comprehension)
+   - **Priority 3:** Chapter 3.5.x diagrams (signal processing concepts)
+
+4. **Image format:**
+   - Prefer SVG format (scalable, matches existing images)
+   - Use consistent naming: `ch[N]-Z-G-[num].svg` or `Fig[N].[num].svg`
+
+---
+
+## Image Organization Inconsistency
+
+The current image organization varies across chapters, which should be standardized:
+
+### Current Structure
+```
+static/img/
+├── ch1-*.svg                    # Chapter 1 - root level
+├── javascript/
+│   └── ch2-*.svg               # Chapter 2 - subdirectory
+├── chapter-3/
+│   └── ch3-*.svg               # Chapter 3 - subdirectory
+└── (no chapter-4 directory)    # Chapter 4 - missing
+```
+
+### Recommended Consistent Structure
+```
+static/img/
+├── chapter-1/
+│   └── ch1-*.svg
+├── chapter-2/
+│   └── ch2-*.svg
+├── chapter-3/
+│   └── ch3-*.svg
+├── chapter-4/
+│   └── ch4-*.svg
+└── chapter-5/
+    └── ch5-*.svg
+```
+
+**Actions for consistency:**
+1. Create `static/img/chapter-1/` and move Chapter 1 images there
+2. Rename `static/img/javascript/` to `static/img/chapter-2/`
+3. Create `static/img/chapter-4/` directory
+4. Ensure Chapter 5 images are in `static/img/chapter-5/`
+5. Update all markdown references to use new paths
+
+---
+
+## Notes
+
+- All existing Chapter 1, 2, 3 (partial), and 5 (partial) images are present and working
+- The original SICP book contains all these diagrams, they just need to be converted/adapted to JavaScript syntax
+- Consider sourcing images from upstream repositories that have already adapted SICP figures for JavaScript