v0.3.1

Fixed

• Model calls are priced. req_llm prices a reply only when every
  conditional tariff of the model is settled by the caller's
  :pricing_context. llm_db's tariffs for Claude 4 and later (as of
  llm_db 2026.10), gpt-5.6 and later, and some Gemini 3.x models (3.1
  Pro, 3.8 Flash) carry such conditions (batch, fast mode, service tier,
  US-only inference or regional processing, cache TTL or explicit-cache
  storage), so calls to those models came back unpriced and rho counted
  $0: in usage.json, the sessions' usage.cost, Rho.Session.totals/1
  and the daily cap (Rho.Budget). Models with a flat tariff (gpt-5.5,
  Gemini 2.5) were priced already. Rho.LLM.ReqLLM now passes what rho's
  requests are (not batched, standard speed and tier, global inference,
  Anthropic's 5-minute cache, Gemini's implicit cache). A subscription
  call is priced at its API-key price, as the docs already said
  (notional), so a loop's daily cap (:budget) now counts Claude
  subscription calls, and Codex calls on such models, too:
  Rho.Settings.File's default cap is $1.00 a day, which a session on a
  subscription can reach in an hour. Upstream:
  req_llm#1121.
• Claude's uncached input tokens were recorded as 0: Rho.Session.usage/1
  took the cache's tokens off req_llm's input_tokens, which for
  Anthropic (input_includes_cached: false) doesn't hold them. pi's
  cost split is filled in too: input, cacheRead, cacheWrite and
  output from the reply's priced line items (they were the input and
  output costs with the cache's inside, and 0 for the cache).