feat(web): ontology-driven fleet treegrid, relations grouping, dev auto-config

Knowledge Base / Fleet browsing:
- EntityTable renders as a treegrid (arbitrary depth, expand/collapse,
  ARIA row/level/expanded), grouped by parent-child relationships
  derived entirely from the live ontology graph (cardinality ->
  direction; typeDepth specificity for ties) rather than a hardcoded
  relationship list — see loadFleetGrouping in KnowledgeBase.svelte.
- Fold Services and Storage categories into Fleet (services/pools/
  volumes/datasets now nest under the compute entity or pool that
  provides/contains them instead of having their own browsing tabs).
- Drop `cluster` entities from Fleet browsing so a host's `located-at`
  (site) relationship wins the tree-parent slot without needing a
  hardcoded priority override — member-of simply has no valid target
  left to point at.
- Add a "show destroyed/inactive" Switch (default off) filtering on
  entity.state, replacing an always-on checkbox.

Entity detail panel:
- Split the Relations section into Outgoing/Incoming groups (relative
  to the viewed entity), and scope the section's count to edges
  actually incident to it rather than the whole depth-1 neighborhood.

Dev experience:
- Auto-fill the SPA's token from the dev server's own OIKOS_API_TOKEN
  (vite.config.ts define + main.ts, dev-only, only when unconfigured)
  so the "Connect to Oikos" prompt doesn't reappear on every reload.
- .claude/launch.json: autoPort, since port 5173 is often already
  claimed by another worktree's dev server.

Adds ui/checkbox and ui/switch (bits-ui primitives, following the
existing shadcn-svelte wrapper pattern) and fetchOntology()/
RelationshipTypeDef to api.ts. Also fixes a missing types.ts import
in api.ts (ChatEvent/MessageContent) that predates this branch.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/src/lib/components/ui/checkbox/checkbox.svelte

@@ -0,0 +1,36 @@
+<script lang="ts">
+  import { Checkbox as CheckboxPrimitive } from 'bits-ui'
+  import CheckIcon from '@lucide/svelte/icons/check'
+  import MinusIcon from '@lucide/svelte/icons/minus'
+  import { cn } from '$lib/utils.js'
+
+  let {
+    ref = $bindable(null),
+    checked = $bindable(false),
+    indeterminate = $bindable(false),
+    class: className,
+    ...restProps
+  }: CheckboxPrimitive.RootProps = $props()
+</script>
+
+<CheckboxPrimitive.Root
+  bind:ref
+  bind:checked
+  bind:indeterminate
+  data-slot="checkbox"
+  class={cn(
+    'peer border-input dark:bg-input/30 data-[state=checked]:bg-primary data-[state=checked]:text-primary-foreground dark:data-[state=checked]:bg-primary data-[state=checked]:border-primary focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive size-4 shrink-0 rounded-[4px] border shadow-xs transition-shadow outline-none focus-visible:ring-3 disabled:cursor-not-allowed disabled:opacity-50',
+    className
+  )}
+  {...restProps}
+>
+  {#snippet children({ checked, indeterminate })}
+    <div data-slot="checkbox-indicator" class="flex items-center justify-center text-current transition-none">
+      {#if indeterminate}
+        <MinusIcon class="size-3.5" />
+      {:else if checked}
+        <CheckIcon class="size-3.5" />
+      {/if}
+    </div>
+  {/snippet}
+</CheckboxPrimitive.Root>

web/src/lib/components/ui/checkbox/index.ts

@@ -0,0 +1 @@
+export { default as Checkbox } from './checkbox.svelte'

web/src/lib/components/ui/switch/index.ts

@@ -0,0 +1 @@
+export { default as Switch } from './switch.svelte'

web/src/lib/components/ui/switch/switch.svelte

@@ -0,0 +1,27 @@
+<script lang="ts">
+  import { Switch as SwitchPrimitive } from 'bits-ui'
+  import { cn } from '$lib/utils.js'
+
+  let {
+    ref = $bindable(null),
+    checked = $bindable(false),
+    class: className,
+    ...restProps
+  }: SwitchPrimitive.RootProps = $props()
+</script>
+
+<SwitchPrimitive.Root
+  bind:ref
+  bind:checked
+  data-slot="switch"
+  class={cn(
+    'peer data-[state=checked]:bg-primary data-[state=unchecked]:bg-input focus-visible:border-ring focus-visible:ring-ring/50 inline-flex h-[1.15rem] w-8 shrink-0 items-center rounded-full border border-transparent shadow-xs transition-all outline-none focus-visible:ring-3 disabled:cursor-not-allowed disabled:opacity-50',
+    className
+  )}
+  {...restProps}
+>
+  <SwitchPrimitive.Thumb
+    data-slot="switch-thumb"
+    class="bg-background pointer-events-none block size-4 rounded-full ring-0 transition-transform data-[state=checked]:translate-x-[calc(100%-2px)] data-[state=unchecked]:translate-x-0"
+  />
+</SwitchPrimitive.Root>