Initial commit: hermes-wiki-viewer v0.2.0
Fork of DanielCheer/obsidian-web-viewer (MIT, 2026-04) with Lukas' first additions for the Hermes Wiki workflow. Additive customization layer (vault-custom.js) — keeps upstream-merge trivial via a one-line script tag in vault.html. Features added: 1. Current-page highlighting in 3D Graph — current node gold+glow, connected nodes light-blue, others dim to 20% opacity 2. Click-to-navigate on graph — Three.js raycaster triggers file load 3. Responsive layout — graph collapses below 1024px, tree below 768px 4. URL-based deep-linking via ?file=<path> query param 5. Server-side ?file= support in /api/vault/file/ endpoint Modified files: - server.py: +7 lines (Lukas-add: ?file= query param parsing) - vault.html: +1 line (script tag for vault-custom.js) New files: - vault-custom.js: 11KB, all customizations in one place under HermesCustom namespace - README.md: fork intro, quick start, customization guide - CHANGELOG.md: Lukas-additions tracking - docs/ARCHITECTURE.md: design rationale - docs/CUSTOMIZATIONS.md: feature spec - .gitignore: standard 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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# Customizations — Feature Spec
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Each section describes one Lukas-feature: what it does, how it works, where the code lives, and known limitations.
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## 1. Current-page highlighting in 3D Graph
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**What:** When you open a file, the corresponding node in the 3D Graph becomes brighter and larger. Nodes that the open file links to (via `[[wikilinks]]`) also brighten. All other nodes dim.
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**How:**
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1. `HermesCustom.getCurrentFile()` reads the file path from `?file=` URL param (preferred) or tracks via the `loadFile()` hook
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2. `HermesCustom.getConnectedFiles(currentFile)` looks up outgoing edges in the global graph data
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3. `HermesCustom.highlightCurrentNode()` iterates `window.graphNodeObjects` (obv's Three.js node meshes) and adjusts `material.color`, `emissive`, `scale`, `opacity`
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**Code:** `vault-custom.js`, methods under namespace `HermesCustom.*`.
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**Materials used (Catppuccin palette, matches theme):**
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- Current: `#FFD700` (gold) + emissive glow + 1.5x scale
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- Connected: `#89b4fa` (light blue) + faint emissive + 1.1x scale
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- Other: `#313244` (muted) + 20% opacity (transparent)
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**Known limitation:**
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- Uses `window.graphNodeObjects` global from obv — if obv renames this, we need to update. Mitigation: detection in `highlightCurrentNode` waits up to 500ms for obv's graph to be ready.
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- Highlight doesn't preserve selection across page reload — fresh fetch on every load.
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## 2. Click-to-navigate on 3D Graph
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**What:** Clicking a node in the 3D Graph navigates to that file's page.
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**How:**
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1. `HermesCustom.setupGraphClickHandler()` sets up a Three.js Raycaster on the canvas DOM element
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2. On click, computes normalized mouse coords, raycasts into scene
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3. First intersection's `userData.nodeId` is the file path
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4. Calls `window.loadFile(nodeId)` (obv's existing loader)
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5. Updates URL with `window.history.pushState({}, '', '?file=<path>')`
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**Code:** `vault-custom.js`, ~25 lines.
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**Known limitation:**
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- Three.js raycasting requires nodes to have `userData.nodeId` set — verified in obv's `addNodeToScene` function (line ~310 in obv's graph render). If obv removes this, our handler silently does nothing.
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- No keyboard navigation in graph (yet). Roadmap item.
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## 3. Responsive Layout
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**What:** The 3-panel desktop layout collapses gracefully on smaller screens.
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**Breakpoints:**
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- **Desktop (≥1024px):** Full 3-panel layout — Tree 240px | Content 1fr | Graph 240px
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- **Tablet (768px–1023px):** Tree 240px | Content 1fr | Graph 200px (bottom panel)
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- **Mobile (<768px):** Tree as hamburger menu (off-canvas, slides in from left) | Content full-width | Graph hidden
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**How:**
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- `HermesCustom.injectResponsiveCSS()` adds `<style>` tag with media queries
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- `HermesCustom.responsiveLayout()` adds `.mobile-mode` / `.tablet-mode` classes to `.vault-app` based on `window.innerWidth`
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- Resize handler is throttled (150ms) to avoid jank
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- Hamburger toggle button is appended to header in mobile mode
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**Code:** `vault-custom.js`, ~80 lines (including CSS string).
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**Known limitation:**
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- The injected CSS uses `!important` to override obv's `grid-template-columns`. If obv restructures the layout, we may need to adjust selectors.
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- Hamburger menu doesn't auto-close on file selection — minor UX nit. Roadmap.
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## 4. URL-based navigation (?file=)
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**What:** The URL contains the currently-open file as a `?file=<path>` query param. This makes pages deep-linkable and back-button friendly.
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**How:**
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- `HermesCustom.getCurrentFile()` reads `?file=` from `URLSearchParams`
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- `vault-custom.js` updates URL via `history.pushState()` on file load
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- Server.py patch accepts `?file=` in API calls
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**Server-side patch (server.py):**
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```python
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# Lukas-add: also support ?file=<path> query for clean URL navigation
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if "?" in rel:
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rel, _, query = rel.partition("?")
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from urllib.parse import parse_qs
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file_param = parse_qs(query).get("file", [None])[0]
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if file_param:
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rel = file_param
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```
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**Known limitation:**
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- Server-side patch assumes `?file=` is the only query parameter obv might add. If obv adds another (e.g. `?theme=`), the simple `partition("?")` still works but is naive. Acceptable for current state.
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## 5. Tracking current file via loadFile hook
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**What:** `vault-custom.js` patches obv's `window.loadFile` to remember the last loaded path. Used as a fallback when the URL doesn't have `?file=` (e.g., when obv opens a file from search without updating URL).
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**How:**
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```js
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const originalLoadFile = window.loadFile;
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window.loadFile = function(path) {
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HermesCustom._lastLoadedFile = path;
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const result = originalLoadFile.apply(this, arguments);
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setTimeout(HermesCustom.highlightCurrentNode, 300);
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return result;
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};
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```
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**Known limitation:**
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- The 300ms delay assumes the render finishes within that time. Slow devices may need a longer delay. Could be improved by hooking into a render-completion signal if obv provides one.
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---
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## Testing
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Manual testing only for now. Test cases:
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| Scenario | Expected |
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|----------|----------|
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| Open `concepts/agent-reference-model.md` | Graph: that node gold + glow, connected nodes light blue, others dim |
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| Open file via search (not via tree click) | Same highlighting (URL gets `?file=`) |
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| Click graph node | File loads, URL updates |
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| Resize browser to <1024px | Graph moves to bottom panel |
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| Resize browser to <768px | Tree becomes hamburger, graph hidden |
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| Hard reload on file URL | File loads directly (server.py parses `?file=`) |
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| Upstream obv update (theoretical) | Only 1 line of conflict in vault.html, easy merge |
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Planned: Playwright-based automated test for the 5 visual features.
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