feat: add GitHub repository dashboard with Prometheus metrics

ghtracker authenticates as a GitHub App and scans a configured list of repositories on a schedule. It serves a dashboard, a JSON state endpoint, a health probe and Prometheus metrics.

The dashboard lists only items that need attention: failing workflows, pull requests that wait too long or fail their checks, stale issues and projects that failed to scan. It has search, dynamic filters and a button that rescans on demand. The Vue app is embedded in the Go binary.

The client protects the GitHub rate limit with conditional requests, a request reserve and Retry-After handling.

src/components/ui/toggle-group/ToggleGroup.vue

@@ -0,0 +1,59 @@
+<script setup lang="ts">
+import type { VariantProps } from 'class-variance-authority'
+import type { ToggleGroupRootEmits, ToggleGroupRootProps } from 'reka-ui'
+import type { HTMLAttributes } from 'vue'
+import type { toggleVariants } from '@/components/ui/toggle'
+import { reactiveOmit } from '@vueuse/core'
+import { ToggleGroupRoot, useForwardPropsEmits } from 'reka-ui'
+import { provide } from 'vue'
+import { cn } from '@/lib/utils'
+
+type ToggleGroupVariants = VariantProps<typeof toggleVariants>
+
+const props = withDefaults(
+  defineProps<
+    ToggleGroupRootProps & {
+      class?: HTMLAttributes['class']
+      variant?: ToggleGroupVariants['variant']
+      size?: ToggleGroupVariants['size']
+      spacing?: number
+    }
+  >(),
+  {
+    spacing: 0,
+  },
+)
+
+const emits = defineEmits<ToggleGroupRootEmits>()
+
+provide('toggleGroup', {
+  variant: props.variant,
+  size: props.size,
+  spacing: props.spacing,
+})
+
+const delegatedProps = reactiveOmit(props, 'class', 'size', 'variant')
+const forwarded = useForwardPropsEmits(delegatedProps, emits)
+</script>
+
+<template>
+  <ToggleGroupRoot
+    v-slot="slotProps"
+    data-slot="toggle-group"
+    :data-size="size"
+    :data-variant="variant"
+    :data-spacing="spacing"
+    :style="{
+      '--gap': spacing,
+    }"
+    v-bind="forwarded"
+    :class="
+      cn(
+        'group/toggle-group flex w-fit items-center gap-[--spacing(var(--gap))] rounded-md data-[spacing=default]:data-[variant=outline]:shadow-xs',
+        props.class,
+      )
+    "
+  >
+    <slot v-bind="slotProps" />
+  </ToggleGroupRoot>
+</template>

src/components/ui/toggle-group/ToggleGroupItem.vue

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+<script setup lang="ts">
+import type { VariantProps } from 'class-variance-authority'
+import type { ToggleGroupItemProps } from 'reka-ui'
+import type { HTMLAttributes } from 'vue'
+import { reactiveOmit } from '@vueuse/core'
+import { ToggleGroupItem, useForwardProps } from 'reka-ui'
+import { inject } from 'vue'
+import { cn } from '@/lib/utils'
+import { toggleVariants } from '@/components/ui/toggle'
+
+type ToggleGroupVariants = VariantProps<typeof toggleVariants> & {
+  spacing?: number
+}
+
+const props = defineProps<
+  ToggleGroupItemProps & {
+    class?: HTMLAttributes['class']
+    variant?: ToggleGroupVariants['variant']
+    size?: ToggleGroupVariants['size']
+  }
+>()
+
+const context = inject<ToggleGroupVariants>('toggleGroup')
+
+const delegatedProps = reactiveOmit(props, 'class', 'size', 'variant')
+const forwardedProps = useForwardProps(delegatedProps)
+</script>
+
+<template>
+  <ToggleGroupItem
+    v-slot="slotProps"
+    data-slot="toggle-group-item"
+    :data-variant="context?.variant || variant"
+    :data-size="context?.size || size"
+    :data-spacing="context?.spacing"
+    v-bind="forwardedProps"
+    :class="
+      cn(
+        toggleVariants({
+          variant: context?.variant || variant,
+          size: context?.size || size,
+        }),
+        'w-auto min-w-0 shrink-0 px-3 focus:z-10 focus-visible:z-10',
+        'data-[spacing=0]:rounded-none data-[spacing=0]:shadow-none data-[spacing=0]:first:rounded-l-md data-[spacing=0]:last:rounded-r-md data-[spacing=0]:data-[variant=outline]:border-l-0 data-[spacing=0]:data-[variant=outline]:first:border-l',
+        props.class,
+      )
+    "
+  >
+    <slot v-bind="slotProps" />
+  </ToggleGroupItem>
+</template>

src/components/ui/toggle-group/index.ts

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+export { default as ToggleGroup } from './ToggleGroup.vue'
+export { default as ToggleGroupItem } from './ToggleGroupItem.vue'