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Asking whether the service was running current code turned up three problems it was not. 1. energy_observations was EMPTY. Recreating the DB for the base_model_id schema change dropped every reference-workload row, so cost_score and eco_score had silently fallen back to the neutral 0.5. The 7-distinct-model routing result reported earlier was therefore proficiency ALONE, not proficiency plus measured cost/eco. Re-swept. 2. The units would not have survived a reboot. Lingering was never enabled, so the user manager stops at logout. Enabled, and moved into the documented install steps rather than a footnote. 3. glm-5.2-flex had no proficiency at all, from a real bug. Propagation copied from the row whose id equals base_model_id -- glm-5.2 -- which is canary and never evaluated. Matching was also on family alone, so a '-fast' row could inherit its reasoning-ENABLED sibling's scores. Inheritance now requires matching (base_model_id, reasoning_mode, context_variant), and a flex row with no evaluated equivalent is measured directly instead of scoring blank. /health now reports scoring coverage and warns when an axis has no data. An empty axis is not an error -- every candidate takes 0.5 and routing still works -- which is exactly what makes it dangerous: a 0.4 weight can contribute nothing while health says "ok". It has now happened twice, so it is surfaced rather than inferred. Adds llm-router-seed.timer. Attribution reproduces within about 30 minutes (0.3-1.1x on a spot-check) but not across hours: between two sweeps deepseek-v4-flash moved ~50x and qwen3.6-35b ~7x the other way, enough to invert their cost ranking. More samples inside one sweep measures one moment more precisely; coverage across time is what actually helps. load_candidates already medians over all seed_reference rows, so a periodic small sweep turns that into a median-across-time for free. Until several sweeps accumulate, the cost and eco ordering is provisional -- a single sweep's ranking is one sample of a moving quantity. Tests 153 -> 156. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018xTPER7K8fNyKiuqNvTCTa
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