docs: added builder notes for task 3

Week-1/Task-3/builder/BuilderNotes.md

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+# Builder Notes (Thob) — Task 3: Duplicate Object / Duplicate Group
+
+## Thob Observations from Task Notes
+
+- **Possible:** Yes
+- **Implementation used:** Duplicate shortcut for both single object and grouped structure.
+- **What worked as expected:**
+	- Duplicating a single object creates a visible copy.
+	- Duplicating a group also creates a full copied hierarchy.
+	- Transforms are preserved at duplication time.
+- **Key behavior observed:**
+	- Both object duplicate and group duplicate behave as copy-paste.
+	- Duplicates are independent; no linking/reference relationship is maintained with source.
+- **UX quality:**
+	- Shortcut-based duplication is fast.
+	- Missing duplicate mode (linked vs independent) makes behavior limiting for synchronized edits.
+- **Builder flow used:**
+	1. Create base object.
+	2. Duplicate object using editor shortcut.
+	3. Create grouped hierarchy.
+	4. Duplicate the group.
+	5. Verify copied transforms/structure and check whether source and duplicate remain linked.
+- **Complexity:** Medium
+- **Main limitation signals:** Editor UX + Schema/Data model.
+- **Workaround status:** Use independent duplicate copies only; no linked duplication path found.
+
+## Console Warnings/Errors Seen (Deduplicated) and Probable Meaning
+
+### warn: `Permissions-Policy header unrecognized feature ('browsing-topics')`
+- **Type:** Browser/header compatibility warning.
+- **Probable meaning:** Server sends a policy directive unsupported by current browser runtime.
+- **Impact:** Usually low for duplication behavior; mostly environmental noise.
+
+### warn: `GetBindingData... method already registered` (many IDs)
+- **Type:** Duplicate registration warning.
+- **Probable meaning:** Binding handlers are re-registered on rerender/reconnect without cleanup.
+- **Impact:** High log noise, duplicate callback execution risk, and possible unstable editor reactions.
+
+### warn: `resetPOI method already registered`
+- **Type:** Duplicate command registration.
+- **Probable meaning:** Camera/POI command pipeline attached multiple times.
+- **Impact:** One user action may run multiple times, causing state drift.
+
+### warn: `update-static-component-prop method already registered`
+- **Type:** Duplicate update-pipeline registration.
+- **Probable meaning:** Static prop update handlers are mounted repeatedly.
+- **Impact:** Duplicate writes and inconsistent property panel behavior.
+
+### warn: `Component changing from uncontrolled to controlled` (Popover / RadioGroup / undefined)
+- **Type:** React form-state warning.
+- **Probable meaning:** Controls mount with unstable/undefined value and later switch to controlled mode.
+- **Impact:** UI flicker, unstable inspector controls, and harder-to-trust edit state.
+
+### error: `THREE.GLTFLoader: Invalid plugin found: missing name`
+- **Type:** Asset loader/plugin configuration error.
+- **Probable meaning:** GLTF plugin object shape is invalid or missing required metadata.
+- **Impact:** Import pipeline may partially fail and generate secondary rendering issues.
+
+### warn: `THREE.MaterialLoader: Undefined texture null`
+- **Type:** Asset/material reference warning.
+- **Probable meaning:** Material references missing texture slot(s).
+- **Impact:** Incorrect materials or degraded visual fidelity; usually non-fatal.
+
+### info/warn: `ReconnectingWebSocket reconnecting/open/syncing/...`
+- **Type:** Transport/sync lifecycle logs.
+- **Probable meaning:** Session reconnect and state sync handshakes are occurring.
+- **Impact:** Usually informational, but repeated reconnects can amplify duplicate registration side effects.
+
+### error: `Cannot read properties of null (reading 'contentWindow')`
+- **Type:** Runtime exception.
+- **Probable meaning:** Message post attempted against iframe/window not mounted or already disposed.
+- **Impact:** Preview communication can fail and editor state can desynchronize.
+
+### warn: `Icon component has been deprecated`
+- **Type:** Deprecation warning.
+- **Probable meaning:** Legacy UI API still in use.
+- **Impact:** Low immediate risk; medium future maintenance risk.
+
+### error: `R3F: Div is not part of the THREE namespace`
+- **Type:** Critical render-tree composition error.
+- **Probable meaning:** DOM node rendered in R3F scene tree without proper bridge/extension.
+- **Impact:** Scene subtree can fail rendering, affecting reliability of duplication validation.
+
+### error: `THREE.WebGLRenderer: Context Lost`
+- **Type:** Graphics runtime error.
+- **Probable meaning:** WebGL context dropped (resource pressure, repeated remounts, browser/GPU reset).
+- **Impact:** Canvas interruptions and unreliable editor preview behavior.
+
+### error: `Failed to load resource: 404`
+- **Type:** Network/resource error.
+- **Probable meaning:** Asset/resource path missing or stale.
+- **Impact:** Missing resources can cascade into loader/material warnings.
+
+### warn/error: `Konva has no node with type ambientLight/meshStandardMaterial/boxGeometry/mesh` and layer width/height warnings
+- **Type:** Renderer mismatch/runtime warnings.
+- **Probable meaning:** Non-Konva scene nodes are being interpreted in a Konva path; invalid layer size updates applied.
+- **Impact:** Rendering fallback behavior and layout/render correctness risk.
+
+## Overall Read
+
+- Task objective is functionally reachable in builder: object and group duplication both produce full copies.
+- Behavior is strictly independent copy-paste; no linked duplicate mode is currently available.
+- Transform and structure preservation are acceptable at duplicate time, but advanced synchronized editing workflows are not supported.
+- Console profile indicates substantial runtime/editor noise (duplicate registrations, state-control warnings, renderer/path mismatches), which can reduce confidence in complex scene editing even though basic duplication works.