fix: cap homepage issue list and normalize tag badge sizes

[mathix420]

Summary

• Homepage issue list is capped at 10 items with a "See all N issues →" link to /issues, instead of rendering the entire directory on the homepage
• Homepage top-tags quick-nav trimmed from 8 to 7 slots
• Tag page related-tags badges now use a consistent text-sm size instead of scaling font weight/size by usage count

Test plan

• bunx vue-tsc --noEmit passes
• Manually verify homepage issue list truncation and "see all" link
• Manually verify tag page related-tag badges render at consistent size

🤖 Generated with Claude Code

[github-actions]

🧹 Code quality

Check		Summary
vize lint	✅	0 errors · 320 warnings
vize format	✅	all files formatted
fallow audit	❌	fail · 0 dead-code · 4 complexity · 1 dupes (6 files)

fallow audit output

  Identical code blocks detected via suffix-array analysis — https://docs.fallow.tools/explanations/duplication#clone-groups

✗ 32 lines (0.1%) duplicated across 3 files (0.05s)

── Complexity ─────────────────────────────────────

■ Metrics: 512 LOC · dead files 0.0% · dead exports 0.0% · avg cyclomatic 2.7 · p90 cyclomatic 7 · maintainability 84.1 (moderate)

  Function size: 91% low · 2% medium · 2% high · 4% very high  (1-15 / 16-30 / 31-60 / >60 LOC)

● Large functions (2)
  app/pages/index.vue
    :183 <template>  298 lines
  app/pages/tag/[slug].vue
    :132 <template>  212 lines
  Functions exceeding 60 lines of code (very high risk): https://docs.fallow.tools/explanations/health#unit-size

● High complexity findings (4)
  CRAP scores are estimated from export references; run `fallow health --coverage <coverage-final.json>` for exact scores.
  app/pages/index.vue
    :183 <template> (template complexity) CRITICAL
          21 cyclomatic   36 cognitive  298 lines
         462.0 CRAP
    :76 statItems HIGH
           9 cyclomatic    4 cognitive    6 lines
          90.0 CRAP
    :96 exploreLinks HIGH
           9 cyclomatic    4 cognitive   60 lines
          90.0 CRAP
    :50 resultGroups HIGH
           7 cyclomatic    3 cognitive    5 lines
          56.0 CRAP
  Functions and synthetic template or component entries exceeding cyclomatic, cognitive, or CRAP thresholds (https://docs.fallow.tools/explanations/health#complexity-metrics)
  To suppress inline templates: // fallow-ignore-next-line complexity (above @Component)
  To suppress: // fallow-ignore-next-line complexity

✗ 4 above threshold · 46 analyzed (0.00s)
✗ complexity: 4 findings · duplication: 1 clone group · 5 changed files (0.40s)
  audit gate excluded 4 inherited findings (run with --gate all to enforce)

_{updated for 8bfadf4 · run #283}