Refine README for validation server instructions and configuration clarity

- Removed outdated quick start section to streamline the validation process.
- Updated the validation server description for better clarity and accessibility.
- Enhanced the explanation of the validation configuration file to emphasize its importance and usage.

README.md

@@ -70,26 +70,7 @@ This gives you:
 - Excellent `benchmark setup` / `benchmark run` workflow with warmup, randomization, and mixed chunk sizes
 - The ability to validate a **just-built binary** end-to-end (caching, coalescing, Range support, memory+disk tiers, GC/eviction, metrics, special endpoints, startup validation, etc.)
 
-#### Quick Start
-
-```bash
-# 1. Build the binary (this also runs short tests)
-make build
-
-# 2. Start a validation-oriented instance (small caches so disk tier + GC get exercised)
-#    Uses port 80 by default; the script will automatically set the needed
-#    capability on the binary via sudo setcap if it is missing.
-./scripts/validate-with-prefill.sh
-
-# 3. In another terminal (or on another machine), create a workload once if you haven't already,
-#    then drive it through your local steamcache2.
-#    Note: when using a non-80 port you may need to give SteamPrefill the full address.
-./scripts/validate-with-prefill.sh   # (shows the exact commands with the correct port)
-```
-
-When the benchmark finishes, press Ctrl-C in the first terminal to cleanly stop the server.
-
-#### Simple validation server (recommended for manual testing)
+#### Validation server (recommended)
 
 For easy validation with external tools (SteamPrefill, etc.), use:
 
@@ -140,7 +121,7 @@ Look for:
 
 #### The Validation Config
 
-The script uses [docs/examples/validate-config.yaml](docs/examples/validate-config.yaml). It enables both memory and disk tiers at modest sizes (128 MB / 512 MB) with conservative concurrency. Edit or copy it if you need larger caches for bigger workloads.
+The recommended validation config is at [docs/examples/validate-config.yaml](docs/examples/validate-config.yaml). It enables both memory and disk tiers at modest sizes (128 MB / 512 MB) with conservative concurrency. Edit or copy it if you need larger caches for bigger workloads.
 
 #### What Gets Validated