feat(roadmap): YAML-driven roadmap + Tailwind UI w/ filters & details modal

- Convert roadmap to YAML:
  - Add data structure: id, priority, title, goal, tags, milestone
  - Add `details` field (supports list or block string); populated initial content
  - Quote scalars and use explicit nulls to avoid YAML parse edge cases
  - Update `updated` date to 2025-08-22

- Flask blueprint + loader:
  - New /roadmap view with section switching (roadmap | backlog | open_questions)
  - Filters: q (search), tag (multi, AND), min_priority, milestone
  - Dataclasses: RoadmapData/RoadmapItem; include `details`
  - `_normalize_details()` to accept string or list, normalize to list[str]
  - Configurable path via `ROADMAP_FILE` (env or defaults)
  - Remove cache layer for simplicity

- UI (Tailwind):
  - `templates/roadmap.html` with responsive cards, tag chips, and filter form
  - Details modal (larger max width, scrollable body) showing ID/goal/priority/tags/milestone
  - Safe JSON payload to modal via `|tojson|forceescape`

- JS:
  - DOM-ready, event-delegated handler for `data-item` buttons
  - Populate modal fields and render multi-paragraph details

- Fixes & polish:
  - Resolved YAML `ScannerError` by quoting strings with `:` and `#`
  - Ensured `details` is passed through route to template and included in button payload
  - Minor styling tweaks for consistency with Tailwind setup

Usage:
- Set `ROADMAP_FILE` if not using default path
- Visit /roadmap and filter via q/tag/min_priority/milestone

docs/changelog.md

@@ -0,0 +1,54 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.  
+This project follows [Semantic Versioning](https://semver.org/).
+
+---
+
+## [Unreleased]
+
+### ✨ Features
+- _Nothing yet — add upcoming features here._
+
+### 🛠️ Refactors
+- _Nothing yet — add upcoming refactors here._
+
+### 🐛 Fixes
+- _Nothing yet — add upcoming fixes here._
+
+---
+
+
+## [v0.2] – 2025-08-22
+
+### ✨ Features
+- **UI Modernization**  
+  Migrated the entire front-end to **Tailwind CSS (compiled)** with **Flowbite JS** components for better responsiveness, consistency, and developer productivity.  
+  Introduced a **new navbar and layout system**, improving navigation and making future expansion easier.  
+  Added **Docker-based CSS build** to keep builds reproducible and lightweight.
+
+- **Reusable CSS Components**  
+  Added custom utility classes (`badge`, `badge-ok`, `badge-warn`, `badge-danger`, `chip`, `card`, etc.) to replace long Tailwind strings.  
+  This reduces repetition and ensures a consistent look across the app.
+
+### 🛠️ Refactors
+- **Template Includes**  
+  Extracted shared UI sections (headers, footers, layout chunks) into separate **Jinja includes**, improving maintainability and readability of templates.  
+
+### 🐛 Fixes
+- **Table Rendering**  
+  Locked table column widths and fixed snippet scaling issues to prevent column misalignment and content reflow.  
+  This ensures analysis results (like script and form findings) remain readable and properly aligned.
+
+- **Rules Engine State**  
+  Fixed a bug where the **rules engine** was not being pulled correctly from the application state after the previous refactor.  
+  This restores proper detection of suspicious scripts/forms and ensures rule definitions (with `name` and `description`) are honored.
+
+---
+
+## [v0.1] – Initial Work
+
+- Implemented initial **Flask-based web UI** for URL submission and analysis.
+- Added **domain & IP enrichment** (WHOIS, GeoIP, ASN/ISP lookups).
+- Built first version of the **Suspicious Rules Engine** for script and form detection.
+- Basic Docker setup for sandboxed deployment.