Add detailed file index and enhance skill documentation for autopilot, decompose, deploy, plan, and research skills. Introduce tests-only mode in decompose skill, clarify required files for deploy and plan skills, and improve prerequisite checks across skills for better user guidance and workflow efficiency.

_docs/02_document/modules/constants_inf.md

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+# Module: constants_inf
+
+## Purpose
+
+Application-wide constants, logging infrastructure, and the object detection class registry loaded from `classes.json`.
+
+## Public Interface
+
+### Constants
+
+| Name | Type | Value | Description |
+|------|------|-------|-------------|
+| `CONFIG_FILE` | str | `"config.yaml"` | Configuration file path |
+| `QUEUE_CONFIG_FILENAME` | str | `"secured-config.json"` | Queue config filename |
+| `AI_ONNX_MODEL_FILE` | str | `"azaion.onnx"` | ONNX model filename |
+| `CDN_CONFIG` | str | `"cdn.yaml"` | CDN configuration file |
+| `MODELS_FOLDER` | str | `"models"` | Directory for model files |
+| `SMALL_SIZE_KB` | int | `3` | Small file size threshold (KB) |
+| `SPLIT_SUFFIX` | str | `"!split!"` | Delimiter in tiled image names |
+| `TILE_DUPLICATE_CONFIDENCE_THRESHOLD` | double | `0.01` | Threshold for tile duplicate detection equality |
+| `METERS_IN_TILE` | int | `25` | Physical tile size in meters for large image splitting |
+| `weather_switcher_increase` | int | `20` | Offset between weather mode class ID ranges |
+
+### Enum: WeatherMode
+
+| Value | Name | Meaning |
+|-------|------|---------|
+| 0 | Norm | Normal weather |
+| 20 | Wint | Winter |
+| 40 | Night | Night |
+
+### Class: AnnotationClass
+
+Fields: `id` (int), `name` (str), `color` (str), `max_object_size_meters` (int).
+
+Represents a detection class with its display metadata and physical size constraint.
+
+### Functions
+
+| Function | Signature | Description |
+|----------|-----------|-------------|
+| `log` | `(str log_message) -> void` | Info-level log via loguru |
+| `logerror` | `(str error) -> void` | Error-level log via loguru |
+| `format_time` | `(int ms) -> str` | Converts milliseconds to compact time string `HMMSSf` |
+
+### Global: `annotations_dict`
+
+`dict[int, AnnotationClass]` — loaded at module init from `classes.json`. Contains 19 base classes × 3 weather modes (Norm/Wint/Night) = up to 57 entries. Keys are class IDs, values are `AnnotationClass` instances.
+
+## Internal Logic
+
+- On import, reads `classes.json` and builds `annotations_dict` by iterating 3 weather mode offsets (0, 20, 40) and adding class ID offsets. Weather mode names are appended to class names for non-Norm modes.
+- Configures loguru with:
+  - File sink: `Logs/log_inference_YYYYMMDD.txt` (daily rotation, 30-day retention)
+  - Stdout: INFO/DEBUG/SUCCESS levels
+  - Stderr: WARNING and above
+
+## Legacy / Orphaned Declarations
+
+The `.pxd` header declares `QUEUE_MAXSIZE`, `COMMANDS_QUEUE`, and `ANNOTATIONS_QUEUE` (with comments referencing RabbitMQ) that are **not defined** in the `.pyx` implementation. These are remnants of a previous queue-based architecture and are unused.
+
+## Dependencies
+
+- **External**: `json`, `sys`, `loguru`
+- **Internal**: none (leaf module)
+
+## Consumers
+
+- `ai_availability_status` (logging)
+- `annotation` (tile duplicate threshold)
+- `onnx_engine` (logging)
+- `tensorrt_engine` (logging)
+- `inference` (logging, constants, annotations_dict, format_time, SPLIT_SUFFIX, METERS_IN_TILE, MODELS_FOLDER, AI_ONNX_MODEL_FILE)
+- `main` (annotations_dict for label lookup)
+
+## Data Models
+
+- `AnnotationClass` — detection class metadata
+- `WeatherMode` — enum for weather conditions
+
+## Configuration
+
+- Reads `classes.json` at import time (must exist in working directory)
+
+## External Integrations
+
+None.
+
+## Security
+
+None.
+
+## Tests
+
+None found.