feat(js): add Bun runtime support (bun test, run, bunx)

README.md

@@ -173,6 +173,7 @@ rtk gh run list                 # Workflow run status
 ```bash
 rtk jest                        # Jest compact (failures only)
 rtk vitest                      # Vitest compact (failures only)
+rtk bun test                    # Bun tests (failures + error context, -85%)
 rtk playwright test             # E2E results (failures only)
 rtk pytest                      # Python tests (-90%)
 rtk go test                     # Go tests (NDJSON, -90%)
@@ -189,6 +190,8 @@ rtk lint                        # ESLint grouped by rule/file
 rtk lint biome                  # Supports other linters
 rtk tsc                         # TypeScript errors grouped by file
 rtk next build                  # Next.js build compact
+rtk bun build                   # Bun build compact
+rtk bunx <cmd>                  # Routes bunx tsc/eslint/prisma to RTK filters
 rtk prettier --check .          # Files needing formatting
 rtk cargo build                 # Cargo build (-80%)
 rtk cargo clippy                # Cargo clippy (-80%)
@@ -200,6 +203,8 @@ rtk rubocop                     # Ruby linting (JSON, -60%+)
 ### Package Managers
 ```bash
 rtk pnpm list                   # Compact dependency tree
+rtk bun install                 # Bun install (strip progress bars)
+rtk bun run <script>            # Bun script runner (filtered output)
 rtk pip list                    # Python packages (auto-detect uv)
 rtk pip outdated                # Outdated packages
 rtk bundle install              # Ruby gems (strip Using lines)

docs/guide/resources/what-rtk-covers.md

@@ -53,6 +53,11 @@ Typical savings: 60-99%.
 |---------|---------|--------------|
 | `jest` | 94-99% | Failures only |
 | `vitest` | 94-99% | Failures only |
+| `bun test` | 85-90% | Failures + error context, passes suppressed |
+| `bun install` | 80% | Progress bars stripped, summary kept |
+| `bun build` | 80% | Compact build output |
+| `bun run <script>` | varies | Script output with error focus |
+| `bunx <cmd>` | varies | Routed to specialized filters (tsc, eslint, prisma) |
 | `tsc` | 75% | Type errors grouped by file |
 | `eslint` | 84% | Violations grouped by rule |
 | `pnpm list` | 70-90% | Compact dependency tree |