feat: Phase 1 — extract the client (web SPA + desktop) to dtoro/oikos-web

Problem: the hexagonal refactor churns the backend tree for nine more
phases; the UI delivery stack (web/ SPA, cmd/desktop Wails wrapper,
compose/web image) must move to its own repo first so doc/layout
rewrites land once on a backend-only tree.

Change:
- New repo git.hubris.network/dtoro/oikos-web (v0.33.0): web/, desktop/
  (updateURL repointed to oikos-web releases), compose/, own CI (web +
  desktop jobs), own deploy script (CI-green gate, TOCTOU guard,
  version-tagged images, prune-to-3), own webhook receiver on :9798 +
  launchd unit, own compose project publishing the same 8091:80.
- Cutover executed on mac-mini in order: oikos stack's web service
  stopped+removed, oikos-web project brought up on 8091; outer Caddy
  untouched (targets the published port) — serving + Authentik flow +
  /wails 404 quirk verified post-cutover.
- Stripped from oikos: web/, cmd/desktop/, compose/web/, desktop CI
  workflow, ci.yml web job, Makefile ui/desktop/desktop-package/install
  targets, the compose web service, oikos-web from deploy.sh's fallback
  prune list; wails + go-keyring dropped from go.mod, vendor synced.
- README / CONTRIBUTING / AGENTS.md / .agents dev+operations docs now
  point at the new repo; mbse + mascot design docs carry a path note.

Risk: production SPA serving depends on the new pipeline now; rollback
is versioned-image re-up of the old web service from a pre-split
checkout (port 8091). Desktop builds installed before the split still
check dtoro/oikos releases — one manual reinstall, noted in the
oikos-web release notes.

Verification: go vet, make test (race), make generate-check, golangci
(no new findings; baseline down 400→365); post-cutover curls —
localhost:8091 200, /wails/runtime.js 404, outer Caddy 302 Authentik.

web/node_modules/sigma/dist/declarations/src/sigma.d.ts

@@ -0,0 +1,187 @@
+import Graph, { Attributes } from "graphology-types";
+import Camera from "./core/camera.js";
+import MouseCaptor from "./core/captors/mouse.js";
+import TouchCaptor from "./core/captors/touch.js";
+import { Settings } from "./settings.js";
+import { CameraState, CoordinateConversionOverride, Coordinates, Dimensions, EdgeDisplayData, Extent, NodeDisplayData, PlainObject, RenderParams, SigmaEvents, TypedEventEmitter } from "./types.js";
+export default class Sigma<N extends Attributes = Attributes, E extends Attributes = Attributes, G extends Attributes = Attributes> extends TypedEventEmitter<SigmaEvents> {
+    private settings;
+    private graph;
+    private mouseCaptor;
+    private touchCaptor;
+    private container;
+    private elements;
+    private canvasContexts;
+    private webGLContexts;
+    private pickingLayers;
+    private textures;
+    private frameBuffers;
+    private activeListeners;
+    private labelGrid;
+    private nodeDataCache;
+    private edgeDataCache;
+    private nodeProgramIndex;
+    private edgeProgramIndex;
+    private nodesWithForcedLabels;
+    private edgesWithForcedLabels;
+    private nodeExtent;
+    private nodeZExtent;
+    private edgeZExtent;
+    private matrix;
+    private invMatrix;
+    private correctionRatio;
+    private customBBox;
+    private normalizationFunction;
+    private graphToViewportRatio;
+    private itemIDsIndex;
+    private nodeIndices;
+    private edgeIndices;
+    private width;
+    private height;
+    private pixelRatio;
+    private pickingDownSizingRatio;
+    private displayedNodeLabels;
+    private displayedEdgeLabels;
+    private highlightedNodes;
+    private hoveredNode;
+    private hoveredEdge;
+    private renderFrame;
+    private renderHighlightedNodesFrame;
+    private needToProcess;
+    private checkEdgesEventsFrame;
+    private nodePrograms;
+    private nodeHoverPrograms;
+    private edgePrograms;
+    private camera;
+    constructor(graph: Graph<N, E, G>, container: HTMLElement, settings?: Partial<Settings<N, E, G>>);
+    private registerNodeProgram;
+    private registerEdgeProgram;
+    private unregisterNodeProgram;
+    private unregisterEdgeProgram;
+    private resetWebGLTexture;
+    private bindCameraHandlers;
+    private unbindCameraHandlers;
+    private getNodeAtPosition;
+    private bindEventHandlers;
+    private bindGraphHandlers;
+    private unbindGraphHandlers;
+    private getEdgeAtPoint;
+    private process;
+    private handleSettingsUpdate;
+    private cleanCameraState;
+    private renderLabels;
+    private renderEdgeLabels;
+    private renderHighlightedNodes;
+    private scheduleHighlightedNodesRender;
+    private render;
+    private addNode;
+    private updateNode;
+    private removeNode;
+    private addEdge;
+    private updateEdge;
+    private removeEdge;
+    private clearNodeIndices;
+    private clearEdgeIndices;
+    private clearIndices;
+    private clearNodeState;
+    private clearEdgeState;
+    private clearState;
+    private addNodeToProgram;
+    private addEdgeToProgram;
+    getRenderParams(): RenderParams;
+    getStagePadding(): number;
+    createLayer<T extends HTMLElement>(id: string, tag: string, options?: {
+        style?: Partial<CSSStyleDeclaration>;
+    } & ({
+        beforeLayer?: string;
+    } | {
+        afterLayer?: string;
+    })): T;
+    createCanvas(id: string, options?: {
+        style?: Partial<CSSStyleDeclaration>;
+    } & ({
+        beforeLayer?: string;
+    } | {
+        afterLayer?: string;
+    })): HTMLCanvasElement;
+    createCanvasContext(id: string, options?: {
+        style?: Partial<CSSStyleDeclaration>;
+    }): this;
+    createWebGLContext(id: string, options?: {
+        preserveDrawingBuffer?: boolean;
+        antialias?: boolean;
+        hidden?: boolean;
+        picking?: boolean;
+    } & ({
+        canvas?: HTMLCanvasElement;
+        style?: undefined;
+    } | {
+        style?: CSSStyleDeclaration;
+        canvas?: undefined;
+    })): WebGLRenderingContext;
+    killLayer(id: string): this;
+    getCamera(): Camera;
+    setCamera(camera: Camera): void;
+    getContainer(): HTMLElement;
+    getGraph(): Graph<N, E, G>;
+    setGraph(graph: Graph<N, E, G>): void;
+    getMouseCaptor(): MouseCaptor<N, E, G>;
+    getTouchCaptor(): TouchCaptor<N, E, G>;
+    getDimensions(): Dimensions;
+    getGraphDimensions(): Dimensions;
+    getNodeDisplayData(key: unknown): NodeDisplayData | undefined;
+    getEdgeDisplayData(key: unknown): EdgeDisplayData | undefined;
+    getNodeDisplayedLabels(): Set<string>;
+    getEdgeDisplayedLabels(): Set<string>;
+    getSettings(): Settings<N, E, G>;
+    getSetting<K extends keyof Settings<N, E, G>>(key: K): Settings<N, E, G>[K];
+    setSetting<K extends keyof Settings<N, E, G>>(key: K, value: Settings<N, E, G>[K]): this;
+    updateSetting<K extends keyof Settings<N, E, G>>(key: K, updater: (value: Settings<N, E, G>[K]) => Settings<N, E, G>[K]): this;
+    setSettings(settings: Partial<Settings<N, E, G>>): this;
+    resize(force?: boolean): this;
+    clear(): this;
+    refresh(opts?: {
+        partialGraph?: {
+            nodes?: string[];
+            edges?: string[];
+        };
+        schedule?: boolean;
+        skipIndexation?: boolean;
+    }): this;
+    scheduleRender(): this;
+    scheduleRefresh(opts?: {
+        partialGraph?: {
+            nodes?: string[];
+            edges?: string[];
+        };
+        layoutUnchange?: boolean;
+    }): this;
+    getViewportZoomedState(viewportTarget: Coordinates, newRatio: number): CameraState;
+    viewRectangle(): {
+        x1: number;
+        y1: number;
+        x2: number;
+        y2: number;
+        height: number;
+    };
+    framedGraphToViewport(coordinates: Coordinates, override?: CoordinateConversionOverride): Coordinates;
+    viewportToFramedGraph(coordinates: Coordinates, override?: CoordinateConversionOverride): Coordinates;
+    viewportToGraph(viewportPoint: Coordinates, override?: CoordinateConversionOverride): Coordinates;
+    graphToViewport(graphPoint: Coordinates, override?: CoordinateConversionOverride): Coordinates;
+    getGraphToViewportRatio(): number;
+    getBBox(): {
+        x: Extent;
+        y: Extent;
+    };
+    getCustomBBox(): {
+        x: Extent;
+        y: Extent;
+    } | null;
+    setCustomBBox(customBBox: {
+        x: Extent;
+        y: Extent;
+    } | null): this;
+    kill(): void;
+    scaleSize(size?: number, cameraRatio?: number): number;
+    getCanvases(): PlainObject<HTMLCanvasElement>;
+}