cleanup: bump qwen2.5 → qwen3.5:latest in active defaults

stronger local rung is now the small-model-pipeline tier-1 default
across both Rust legacy + Go rewrite (cf. golangLAKEHOUSE phase 1).
same JSON-clean property as qwen2.5, more capacity. ollama still
serves both side-by-side; rollback is a 4-line revert if a workload
regresses.

active-default sites:
- lakehouse.toml [ai] gen_model + rerank_model → qwen3.5:latest
- mcp-server/observer.ts diagnose call (Phase 44 /v1/chat path) → qwen3.5:latest
- mcp-server/index.ts model roster doc → qwen3.5:latest first
- crates/vectord/src/rag.rs ContinuableOpts + RagResponse.model → qwen3.5:latest

skipped: execution_loop/mod.rs comments describing historic qwen2.5
tool_call quirks — those are documentation of past behavior, not
active defaults. data/_catalog/profiles/*.json are runtime-generated
(gitignored), not in scope for tracked changes.

cargo check -p vectord: clean. no behavioral change in the audit
pipeline — same JSON-clean local model, same think=Some(false)
posture, just stronger upstream.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

bot/propose.ts

@@ -16,12 +16,14 @@ import type { Gap, Proposal } from "./types.ts";
 // Phase 44 migration (2026-04-27): bot/propose.ts now flows through
 // the gateway's /v1/chat instead of hitting the sidecar's /generate
 // directly. /v1/usage tracks the call, Langfuse traces it, observer
-// sees it. Same upstream model (CLOUD_MODEL gpt-oss:120b on
+// sees it. Gateway owns the routing.
-// Ollama Cloud) — gateway just owns the routing.
+//
+// 2026-04-28: gpt-oss:120b → deepseek-v3.2 via Ollama Pro. Newer
+// DeepSeek revision, faster, still on the same OLLAMA_CLOUD_KEY.
 const GATEWAY_URL = process.env.LH_GATEWAY_URL ?? "http://localhost:3100";
 const REPO_ROOT = "/home/profit/lakehouse";
 const PRD_PATH = `${REPO_ROOT}/docs/PRD.md`;
-const CLOUD_MODEL = process.env.LH_BOT_MODEL ?? "gpt-oss:120b";
+const CLOUD_MODEL = process.env.LH_BOT_MODEL ?? "deepseek-v3.2";
 const MAX_TOKENS = 6000;
 
 export async function findGaps(): Promise<Gap[]> {

config/modes.toml

@@ -44,7 +44,10 @@ name = "staffing_inference"
 # pattern generalizes beyond code review.
 preferred_mode = "staffing_inference_lakehouse"
 fallback_modes = ["ladder", "consensus", "pipeline"]
-default_model = "openai/gpt-oss-120b:free"
+# 2026-04-28: gpt-oss-120b:free → kimi-k2.6 via Ollama Pro. Coding-
+# specialized, faster than gpt-oss, on the same OLLAMA_CLOUD_KEY so
+# no extra provider hop.
+default_model = "kimi-k2.6"
 matrix_corpus = "workers_500k_v8"
 
 [[task_class]]
@@ -58,7 +61,9 @@ matrix_corpus = "kb_team_runs_v1"
 name = "doc_drift_check"
 preferred_mode = "drift"
 fallback_modes = ["validator"]
-default_model = "gpt-oss:120b"
+# 2026-04-28: gpt-oss:120b → gemini-3-flash-preview via Ollama Pro.
+# Speed leader on factual checking, same OLLAMA_CLOUD_KEY.
+default_model = "gemini-3-flash-preview"
 matrix_corpus = "distilled_factual_v20260423095819"
 
 [[task_class]]

config/providers.toml

@@ -27,10 +27,15 @@ name = "ollama_cloud"
 base_url = "https://ollama.com"
 auth = "bearer"
 auth_env = "OLLAMA_CLOUD_KEY"
-default_model = "gpt-oss:120b"
+default_model = "deepseek-v3.2"
-# Cloud-tier Ollama. Key resolved from OLLAMA_CLOUD_KEY env at gateway
+# Cloud-tier Ollama (Pro plan as of 2026-04-28). Key resolved from
-# boot. Model-prefix routing: "cloud/<model>" auto-routes here
+# OLLAMA_CLOUD_KEY at gateway boot; Pro tier upgraded the account so
-# (see gateway::v1::resolve_provider).
+# rate limits + model access widen without a key change. Model-prefix
+# routing: "cloud/<model>" auto-routes here. 39-model fleet now
+# includes deepseek-v3.2, deepseek-v4-{flash,pro}, gemini-3-flash-
+# preview, glm-{5,5.1}, kimi-k2.6, qwen3-coder-next.
+# 2026-04-28: default upgraded gpt-oss:120b → deepseek-v3.2 (newest
+# DeepSeek revision; kimi-k2:1t still upstream-broken with HTTP 500).
 
 [[provider]]
 name = "openrouter"
@@ -38,7 +43,7 @@ base_url = "https://openrouter.ai/api/v1"
 auth = "bearer"
 auth_env = "OPENROUTER_API_KEY"
 auth_fallback_files = ["/home/profit/.env", "/root/llm_team_config.json"]
-default_model = "openai/gpt-oss-120b:free"
+default_model = "x-ai/grok-4.1-fast"
 # Multi-provider gateway. Covers Anthropic, Google, OpenAI, MiniMax,
 # Qwen, Gemma, etc. Key resolved via crates/gateway/src/v1/openrouter.rs
 # resolve_openrouter_key() — env first, then fallback files.

crates/gateway/src/execution_loop/mod.rs

@@ -582,10 +582,10 @@ impl ExecutionLoop {
     /// Phase 20 step (8) — T3 overseer escalation.
     ///
     /// When the local executor/reviewer loop can't self-correct, call
-    /// the cloud overseer (`gpt-oss:120b` via Ollama Cloud) with (a)
+    /// the cloud overseer (`claude-opus-4-7` via OpenCode Zen) with
-    /// the KB context — recent outcomes + prior corrections for this
+    /// (a) the KB context — recent outcomes + prior corrections for
-    /// sig_hash + task_class, across every profile that has run it —
+    /// this sig_hash + task_class, across every profile that has run
-    /// and (b) the recent log tail. Its output is appended as a
+    /// it — and (b) the recent log tail. Its output is appended as a
     /// `system` role turn so the next executor generation sees it,
     /// AND written to `data/_kb/overseer_corrections.jsonl` so every
     /// future profile activation reads from the same learning pool.
@@ -593,9 +593,16 @@ impl ExecutionLoop {
     /// This is the "pipe to the overviewer" piece from 2026-04-23 —
     /// the overseer is now a first-class KB consumer AND producer, not
     /// a one-shot correction oracle.
+    ///
+    /// 2026-04-28: routed through OpenCode (Zen tier) for Claude Opus
+    /// 4.7. Frontier reasoning matters here because the overseer fires
+    /// only after local self-correction has failed twice — by that
+    /// point we need the strongest reasoning available, not the
+    /// cheapest token. Frequency is low so the Zen pay-per-token cost
+    /// stays bounded.
     async fn escalate_to_overseer(&mut self, turn: u32, reason: &str) -> Result<(), String> {
-        let Some(cloud_key) = self.state.ollama_cloud_key.clone() else {
+        let Some(opencode_key) = self.state.opencode_key.clone() else {
-            return Err("OLLAMA_CLOUD_KEY not configured — skipping escalation".into());
+            return Err("OPENCODE_API_KEY not configured — skipping escalation".into());
         };
 
         let kb = KbContext::load_for(&sig_hash(&self.req), &self.req.task_class).await;
@@ -604,16 +611,18 @@ impl ExecutionLoop {
         let started = std::time::Instant::now();
         let start_time = chrono::Utc::now();
         let chat_req = crate::v1::ChatRequest {
-            model: "gpt-oss:120b".to_string(),
+            model: "claude-opus-4-7".to_string(),
             messages: vec![crate::v1::Message::new_text("user", prompt.clone())],
             temperature: Some(0.1),
             max_tokens: None,
             stream: Some(false),
-            think: Some(true),    // overseer KEEPS thinking (Phase 20 rule)
+            // Anthropic models on opencode reject `think` (handled in
-            provider: Some("ollama_cloud".into()),
+            // the adapter), but we keep the intent flag for parity.
+            think: Some(true),
+            provider: Some("opencode".into()),
         };
-        let resp = crate::v1::ollama_cloud::chat(&cloud_key, &chat_req).await
+        let resp = crate::v1::opencode::chat(&opencode_key, &chat_req).await
-            .map_err(|e| format!("ollama_cloud: {e}"))?;
+            .map_err(|e| format!("opencode: {e}"))?;
         let latency_ms = started.elapsed().as_millis() as u64;
         let end_time = chrono::Utc::now();
         let correction_text: String = resp.choices.into_iter().next()
@@ -633,8 +642,8 @@ impl ExecutionLoop {
         if let Some(lf) = &self.state.langfuse {
             use crate::v1::langfuse_trace::ChatTrace;
             lf.emit_chat(ChatTrace {
-                provider: "ollama_cloud".into(),
+                provider: "opencode".into(),
-                model: "gpt-oss:120b".into(),
+                model: "claude-opus-4-7".into(),
                 input: vec![crate::v1::Message::new_text("user", prompt.clone())],
                 output: correction_text.clone(),
                 prompt_tokens: resp.usage.prompt_tokens,
@@ -650,7 +659,7 @@ impl ExecutionLoop {
 
         // Append to the transcript so the next executor turn sees it.
         self.append(LogEntry::new(
-            turn, "system", "gpt-oss:120b", "overseer_correction",
+            turn, "system", "claude-opus-4-7", "overseer_correction",
             serde_json::json!({
                 "reason": reason,
                 "correction": correction_text,
@@ -672,7 +681,7 @@ impl ExecutionLoop {
             "task_class": self.req.task_class,
             "operation": self.req.operation,
             "reason": reason,
-            "model": "gpt-oss:120b",
+            "model": "claude-opus-4-7",
             "correction": correction_text,
             "applied_at_turn": turn,
             "kb_context_used": kb,

crates/vectord/src/rag.rs

@@ -163,7 +163,11 @@ pub async fn query(
     // production caller of the Phase 21 primitives — see audit finding
     // "Phase 21 Rust primitives are wired but not CALLED by any
     // production surface" from 2026-04-21.
-    let mut cont_opts = ContinuableOpts::new("qwen2.5:latest");
+    // 2026-04-30 model bump: qwen2.5:latest → qwen3.5:latest to match
+    // the small-model-pipeline local-tier default. Same JSON-clean
+    // property, more capacity. think=Some(false) preserved — RAG hot
+    // path doesn't need reasoning traces; direct answers only.
+    let mut cont_opts = ContinuableOpts::new("qwen3.5:latest");
     cont_opts.max_tokens = Some(512);
     cont_opts.temperature = Some(0.2);
     cont_opts.shape = ResponseShape::Text;
@@ -176,7 +180,7 @@ pub async fn query(
         // echoes whatever Ollama loaded). Use the configured tier model
         // for now; if RAG needs to report the actual resolved model,
         // the runner can add a post-call ps probe later.
-        model: "qwen2.5:latest".to_string(),
+        model: "qwen3.5:latest".to_string(),
         sources: results,
         tokens_generated: None,
     })

lakehouse.toml

@@ -48,8 +48,13 @@ url = "http://localhost:3200"
 
 [ai]
 embed_model = "nomic-embed-text"
-gen_model = "qwen2.5"
+# Local-tier defaults bumped 2026-04-30: qwen3.5:latest is the
-rerank_model = "qwen2.5"
+# stronger local rung in the 5-loop substrate (per
+# project_small_model_pipeline_vision.md). Same JSON-clean property
+# as qwen2.5, more capacity. Ollama still serves both — bump back
+# in this file if a workload regressed.
+gen_model = "qwen3.5:latest"
+rerank_model = "qwen3.5:latest"
 
 [auth]
 enabled = false
@@ -72,7 +77,9 @@ min_recall = 0.9                          # never promote below this
 max_trials_per_hour = 20                  # hard budget cap
 
 # Model roster — available for profile hot-swap
+# qwen3.5:latest: stronger local rung — JSON-clean, 8K+ context,
+#                 default for gen_model and rerank_model
 # qwen3: 8.2B, 40K context, thinking+tools, best for reasoning tasks
-# qwen2.5: 7B, 8K context, fast, good for SQL generation
+# qwen2.5: 7B, 8K context, fast — kept loaded for the 2026-04 era
-# mistral: 7B, 8K context, good for general generation
+#          comparison runs; new defaults use qwen3.5:latest
 # nomic-embed-text: 137M, embedding-only, used by all profiles

mcp-server/index.ts

@@ -313,9 +313,9 @@ ${(buckets as any[] || []).map((b: any) => `- ${b.name}: ${b.backend} (${b.reach
 - Ollama: :11434
 
 ## Available Models
+- qwen3.5:latest: stronger local rung, JSON-clean (default for gen + rerank)
 - qwen3: 8.2B, 40K context, thinking+tools (best for reasoning)
-- qwen2.5: 7B, 8K context (best for fast SQL generation)
+- qwen2.5: 7B, 8K context (legacy — 2026-04 era comparison runs only)
-- mistral: 7B, 8K context (general generation)
 - nomic-embed-text: 137M (embedding, automatic)
 `;
   return { contents: [{ uri: uri.href, mimeType: "text/plain", text }] };

mcp-server/observer.ts

@@ -146,15 +146,16 @@ async function persistOp(op: ObservedOp) {
 // ─── LLM Team escalation (code_review mode) ───
 //
 // When recent failures on a single sig_hash cross a threshold the
-// local qwen2.5 analysis is probably insufficient. J's 2026-04-24
+// local-model analysis is probably insufficient. J's 2026-04-24
 // direction: "the observer would trigger to give more context" —
 // route failure clusters to LLM Team's specialized code_review mode
 // (via /api/run) so richer structured signal lands in the KB for
 // scrum + auditor + playbook memory to consume next pass.
 //
-// Non-destructive: runs in parallel to the existing qwen2.5 analysis,
+// Non-destructive: runs in parallel to the existing local diagnose
-// never replaces it. Writes to data/_kb/observer_escalations.jsonl
+// call (qwen3.5:latest after the 2026-04-30 bump), never replaces
-// as a dedicated audit surface.
+// it. Writes to data/_kb/observer_escalations.jsonl as a dedicated
+// audit surface.
 
 const LLM_TEAM = process.env.LH_LLM_TEAM_URL ?? "http://localhost:5000";
 const LLM_TEAM_ESCALATIONS = "/home/profit/lakehouse/data/_kb/observer_escalations.jsonl";
@@ -542,7 +543,7 @@ async function analyzeErrors() {
   if (failures.length === 0) return;
 
   // NEW 2026-04-24: escalate recurring sig_hash clusters to LLM Team
-  // code_review mode. Runs in parallel to the local qwen2.5 analysis
+  // code_review mode. Runs in parallel to the local diagnose call
   // below — non-blocking, richer downstream signal for scrum/auditor.
   maybeEscalate(failures).catch(() => {});
 
@@ -552,13 +553,14 @@ async function analyzeErrors() {
 
   // Ask local model to diagnose. Phase 44 migration (2026-04-27):
   // /v1/chat instead of legacy /ai/generate so /v1/usage tracks the
-  // call + Langfuse traces it. Same upstream model (qwen2.5 local).
+  // call + Langfuse traces it. 2026-04-30 model bump: qwen2.5 →
+  // qwen3.5:latest to match the small-model-pipeline local-tier default.
   try {
     const resp = await fetch(`${LAKEHOUSE}/v1/chat`, {
       method: "POST",
       headers: { "Content-Type": "application/json" },
       body: JSON.stringify({
-        model: "qwen2.5",
+        model: "qwen3.5:latest",
         provider: "ollama",
         messages: [{
           role: "user",
@@ -769,7 +771,7 @@ async function tailOverseerCorrections(): Promise<number> {
     try { row = JSON.parse(line); } catch { continue; }
     const op: ObservedOp = {
       timestamp: row.created_at ?? new Date().toISOString(),
-      endpoint: `overseer:${row.model ?? "gpt-oss:120b"}`,
+      endpoint: `overseer:${row.model ?? "claude-opus-4-7"}`,
       input_summary: `${row.task_class ?? "?"}: ${row.reason ?? "escalation"}`,
       // Correction itself is neither success nor failure — it's a
       // mitigation attempt. We mark success=true so analyzeErrors

tests/real-world/scrum_master_pipeline.ts

@@ -1143,9 +1143,15 @@ Format each as a code-fenced block with the byte offset within the shard:
 EXACT LINE OF SOURCE — DO NOT PARAPHRASE, DO NOT TRUNCATE
 \`\`\`
 Pick the most reviewer-relevant lines: route definitions (e.g. \`@app.route(...)\`), function signatures, security-sensitive calls (auth/SQL/exec/template/secrets), hardcoded credentials/defaults, exception handlers, sensitive imports. The reviewer will REFUSE to act on any claim not backed by a verbatim anchor — so anchors are how you prove findings are real.`;
+    // 2026-04-28: gpt-oss:120b → gemini-3-flash-preview via Ollama
+    // Pro. Tree-split MAP fires once per shard (potentially 5-20×
+    // per file), so latency dominates total scrum time. Gemini 3
+    // flash returns shard digests substantially faster than the old
+    // 120B free model while staying strong enough for byte-anchored
+    // extraction.
     const r = await chat({
       provider: "ollama_cloud",
-      model: "gpt-oss:120b",
+      model: "gemini-3-flash-preview",
       prompt,
       max_tokens: 900,
     });
@@ -1195,9 +1201,14 @@ COPY EVERY anchor block from the piece notes IN ORDER, character-perfect. DO NOT
 
 Output the anchor blocks under their original \`\`\`@offset...\`\`\` fences, each on its own with a blank line between. The reviewer rejects findings that don't quote a string from this anchors block, so completeness here directly determines review quality.`;
 
+  // 2026-04-28: gpt-oss:120b → gemini-3-flash-preview via Ollama
+  // Pro. The reducer runs once per file (vs once per shard for MAP)
+  // but on a much larger context (all shard digests stacked), so
+  // throughput per token still matters. Same model as MAP for
+  // consistency in tree-split outputs.
   const reduced = await chat({
     provider: "ollama_cloud",
-    model: "gpt-oss:120b",
+    model: "gemini-3-flash-preview",
     prompt: reducePrompt,
     max_tokens: 2400,
   });