docs: polish for CV (README, changelog, docs, comments)

Author: mgierschdev

CHANGELOG.md

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+# Changelog
+
+All notable changes are documented here. Dates use the original commit timestamps; sensitive assets have been removed from history for the public release.
+
+## [Unreleased]
+- Placeholder for future gameplay tweaks and content.
+
+## [2026-02-03] Public cleanup & offline hardening
+- Removed proprietary assets and secondary sample projects.
+- Marked Unity Services as offline-only with placeholders for IDs/keys.
+- Added CI workflow (Unity Test Runner) and CLI test script.
+- Added licenses, security guidance, and asset licensing notes.
+
+## [2025] Grid/NPC systems expansion
+- Implemented isometric grid object placement, rotation, and obstacles.
+- Added NPC state machine for clients/employees with table assignment.
+- Added editor debug panels for grid and state machine inspection.
+
+## [2024] Initial prototype
+- Created core scenes (`LoadScene`, `GameScene`) and baseline gameplay controllers.
+- Added basic player data model and upgrade scaffolding.
+- Imported initial art and UI placeholders (now removed from public history).

Docs/CV-notes.md

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+# CV Notes (unity-restaurant-simulation)
+
+**Role & scope**
+- Solo developer of a 2D isometric restaurant/tycoon prototype in Unity.
+- Built grid/pathfinding, NPC state machines, editor debug tools, and offline-first service guards.
+
+**Key outcomes**
+- Playable prototype with place/rotate/move objects, NPC seating/serving flow.
+- Added Unity Test Runner suites (EditMode/PlayMode) and GitHub Actions CI to keep tests green.
+- Hardened for public release: secrets replaced with placeholders, assets removed, MIT licensing.
+
+**Tech**
+- Unity 2022.3.11f1 (URP, Input System), C# gameplay + editor scripts, GitHub Actions.
+
+**Artifacts to show**
+- README highlights, CI badge, and gallery placeholders under `Docs/media/`.