hyperstack: switch to Gemma 4 31B on VM2, Qwen3-Coder-Next on VM1

VM1 (hyperstack-vm1-coder.toml, renamed from hyperstack-vm1-gptoss.toml):
- Default model switched from gpt-oss-120b to qwen3-coder-next
- Config file renamed to reflect actual default model

VM2 (hyperstack-vm2.toml):
- Default model switched from qwen3-coder-next to Gemma 4 31B AWQ
- Uses vLLM nightly image + transformers==5.5.0 workaround: Gemma 4
  architecture is registered in transformers 5.x but vLLM stable pins <5
- max_model_len=131072 (128K context); KV cache fills ~95% of H100-80GB VRAM
- Added gemma4-31b preset

watcher.rb:
- Add loading_status field to VmSnapshot to show live model-load progress
  (last relevant log line during startup instead of generic "loading" message)
- fetch_vm_stats now captures both Engine 0 stats and loading-phase log lines
  in a single SSH call using a shell variable to avoid two docker log invocations
- clean_log_line() strips vLLM PID/timestamp prefix for readable display

cli.rb: update all hardcoded hyperstack-vm1-gptoss.toml references to
hyperstack-vm1-coder.toml

hypr.fish: replace pi-hyperstack-nemotron with pi-hyperstack-coder (VM1),
add pi-hyperstack-gemma4 (VM2)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/hyperstack/cli.rb b/lib/hyperstack/cli.rb
index f4d1cef..d4679b1 100644
--- a/lib/hyperstack/cli.rb
+++ b/lib/hyperstack/cli.rb
@@ -21,12 +21,12 @@ module HyperstackVM
       puts 'Commands:'
       puts '  create [--replace] [--dry-run] [--vllm|--no-vllm] [--ollama|--no-ollama] [--model PRESET]'
       puts '  create-both [--replace] [--dry-run] [--vllm|--no-vllm] [--ollama|--no-ollama]'
-      puts '               Provision hyperstack-vm1-gptoss.toml and hyperstack-vm2.toml concurrently.'
+      puts '               Provision hyperstack-vm1-coder.toml and hyperstack-vm2.toml concurrently.'
       puts '               WireGuard setup is serialized: VM1 writes the base wg1.conf first,'
       puts '               then VM2 adds its peer. Requires both TOML files next to the script.'
       puts '  delete [--vm-id ID] [--dry-run]'
       puts '  delete-both [--dry-run]'
-      puts '               Delete the VMs tracked by hyperstack-vm1-gptoss.toml and hyperstack-vm2.toml.'
+      puts '               Delete the VMs tracked by hyperstack-vm1-coder.toml and hyperstack-vm2.toml.'
       puts '  status'
       puts '  watch'
       puts '               Poll all active VMs for vLLM and GPU stats every 60 s.'
@@ -237,7 +237,7 @@ module HyperstackVM
 
       candidates = [
         @config_path,
-        File.join(REPO_ROOT, 'hyperstack-vm1-gptoss.toml'),
+        File.join(REPO_ROOT, 'hyperstack-vm1-coder.toml'),
         File.join(REPO_ROOT, 'hyperstack-vm2.toml'),
         File.join(REPO_ROOT, 'hyperstack-vm-photo.toml')
       ].uniq.select { |path| File.exist?(path) }
@@ -249,7 +249,7 @@ module HyperstackVM
 
     def pair_config_loaders
       [
-        ConfigLoader.load(File.join(REPO_ROOT, 'hyperstack-vm1-gptoss.toml')),
+        ConfigLoader.load(File.join(REPO_ROOT, 'hyperstack-vm1-coder.toml')),
         ConfigLoader.load(File.join(REPO_ROOT, 'hyperstack-vm2.toml'))
       ]
     end