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/@floating-ui/utils/dist/floating-ui.utils.umd.js

@@ -0,0 +1,167 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.FloatingUIUtils = {}));
+})(this, (function (exports) { 'use strict';
+
+  /**
+   * Custom positioning reference element.
+   * @see https://floating-ui.com/docs/virtual-elements
+   */
+
+  const sides = ['top', 'right', 'bottom', 'left'];
+  const alignments = ['start', 'end'];
+  const placements = /*#__PURE__*/sides.reduce((acc, side) => acc.concat(side, side + "-" + alignments[0], side + "-" + alignments[1]), []);
+  const min = Math.min;
+  const max = Math.max;
+  const round = Math.round;
+  const floor = Math.floor;
+  const createCoords = v => ({
+    x: v,
+    y: v
+  });
+  const oppositeSideMap = {
+    left: 'right',
+    right: 'left',
+    bottom: 'top',
+    top: 'bottom'
+  };
+  function clamp(start, value, end) {
+    return max(start, min(value, end));
+  }
+  function evaluate(value, param) {
+    return typeof value === 'function' ? value(param) : value;
+  }
+  function getSide(placement) {
+    return placement.split('-')[0];
+  }
+  function getAlignment(placement) {
+    return placement.split('-')[1];
+  }
+  function getOppositeAxis(axis) {
+    return axis === 'x' ? 'y' : 'x';
+  }
+  function getAxisLength(axis) {
+    return axis === 'y' ? 'height' : 'width';
+  }
+  function getSideAxis(placement) {
+    const firstChar = placement[0];
+    return firstChar === 't' || firstChar === 'b' ? 'y' : 'x';
+  }
+  function getAlignmentAxis(placement) {
+    return getOppositeAxis(getSideAxis(placement));
+  }
+  function getAlignmentSides(placement, rects, rtl) {
+    if (rtl === void 0) {
+      rtl = false;
+    }
+    const alignment = getAlignment(placement);
+    const alignmentAxis = getAlignmentAxis(placement);
+    const length = getAxisLength(alignmentAxis);
+    let mainAlignmentSide = alignmentAxis === 'x' ? alignment === (rtl ? 'end' : 'start') ? 'right' : 'left' : alignment === 'start' ? 'bottom' : 'top';
+    if (rects.reference[length] > rects.floating[length]) {
+      mainAlignmentSide = getOppositePlacement(mainAlignmentSide);
+    }
+    return [mainAlignmentSide, getOppositePlacement(mainAlignmentSide)];
+  }
+  function getExpandedPlacements(placement) {
+    const oppositePlacement = getOppositePlacement(placement);
+    return [getOppositeAlignmentPlacement(placement), oppositePlacement, getOppositeAlignmentPlacement(oppositePlacement)];
+  }
+  function getOppositeAlignmentPlacement(placement) {
+    return placement.includes('start') ? placement.replace('start', 'end') : placement.replace('end', 'start');
+  }
+  const lrPlacement = ['left', 'right'];
+  const rlPlacement = ['right', 'left'];
+  const tbPlacement = ['top', 'bottom'];
+  const btPlacement = ['bottom', 'top'];
+  function getSideList(side, isStart, rtl) {
+    switch (side) {
+      case 'top':
+      case 'bottom':
+        if (rtl) return isStart ? rlPlacement : lrPlacement;
+        return isStart ? lrPlacement : rlPlacement;
+      case 'left':
+      case 'right':
+        return isStart ? tbPlacement : btPlacement;
+      default:
+        return [];
+    }
+  }
+  function getOppositeAxisPlacements(placement, flipAlignment, direction, rtl) {
+    const alignment = getAlignment(placement);
+    let list = getSideList(getSide(placement), direction === 'start', rtl);
+    if (alignment) {
+      list = list.map(side => side + "-" + alignment);
+      if (flipAlignment) {
+        list = list.concat(list.map(getOppositeAlignmentPlacement));
+      }
+    }
+    return list;
+  }
+  function getOppositePlacement(placement) {
+    const side = getSide(placement);
+    return oppositeSideMap[side] + placement.slice(side.length);
+  }
+  function expandPaddingObject(padding) {
+    var _padding$top, _padding$right, _padding$bottom, _padding$left;
+    return {
+      top: (_padding$top = padding.top) != null ? _padding$top : 0,
+      right: (_padding$right = padding.right) != null ? _padding$right : 0,
+      bottom: (_padding$bottom = padding.bottom) != null ? _padding$bottom : 0,
+      left: (_padding$left = padding.left) != null ? _padding$left : 0
+    };
+  }
+  function getPaddingObject(padding) {
+    return typeof padding !== 'number' ? expandPaddingObject(padding) : {
+      top: padding,
+      right: padding,
+      bottom: padding,
+      left: padding
+    };
+  }
+  function rectToClientRect(rect) {
+    const {
+      x,
+      y,
+      width,
+      height
+    } = rect;
+    return {
+      width,
+      height,
+      top: y,
+      left: x,
+      right: x + width,
+      bottom: y + height,
+      x,
+      y
+    };
+  }
+
+  exports.alignments = alignments;
+  exports.clamp = clamp;
+  exports.createCoords = createCoords;
+  exports.evaluate = evaluate;
+  exports.expandPaddingObject = expandPaddingObject;
+  exports.floor = floor;
+  exports.getAlignment = getAlignment;
+  exports.getAlignmentAxis = getAlignmentAxis;
+  exports.getAlignmentSides = getAlignmentSides;
+  exports.getAxisLength = getAxisLength;
+  exports.getExpandedPlacements = getExpandedPlacements;
+  exports.getOppositeAlignmentPlacement = getOppositeAlignmentPlacement;
+  exports.getOppositeAxis = getOppositeAxis;
+  exports.getOppositeAxisPlacements = getOppositeAxisPlacements;
+  exports.getOppositePlacement = getOppositePlacement;
+  exports.getPaddingObject = getPaddingObject;
+  exports.getSide = getSide;
+  exports.getSideAxis = getSideAxis;
+  exports.max = max;
+  exports.min = min;
+  exports.placements = placements;
+  exports.rectToClientRect = rectToClientRect;
+  exports.round = round;
+  exports.sides = sides;
+
+}));