feat(cli): larql vindex3 observe — a prompt in, a run record out - #486
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The verb over V3-OBS-1 and V3-STREAM-1: tokenise the prompt (or take ids), prepare the image once, step every token through the canonical decode session with the lossless recorder and the stats observer attached, optionally continue greedily with those positions observed too, write the record as JSON lines, and print the ids that ran, the provenance fingerprint, the log hash and the final position's top candidates with log-probabilities. Seeded or supplied projection basis. Never a logit lens, never a second traversal. Four end-to-end tests on the encoded fixture; Gemma 3 4B "The capital of France is" -> " Paris" with a 2070-event record over 10 positions.
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What
The verb over V3-OBS-1 (#484) and V3-STREAM-1 (stacked; this PR is based on
v3-stream-1and retargets to main once that merges).Tokenises with the container's own tokenizer (or takes ids), prepares the image once, steps every token through the canonical decode session with the lossless recorder and the stats observer attached, optionally continues greedily with those positions observed too, writes the record as JSON lines, and prints the ids that ran, the provenance fingerprint, the log hash and the final position's top candidates with log-probabilities (a full log-softmax over the real final logits). Supplied basis rows are hashed into the record. Never a logit lens, never a second traversal.
Evidence
Four end-to-end tests on the encoded fixture (record verified with the declared events; greedy continuation as further positions; supplied rows honoured and width-checked; every refusal names its cause). Real run: Gemma 3 4B IT,
The capital of France is→Paris.\n\nParis, a 2070-event record over 10 positions with 68 carrier writes per position, the frozen Gemma topology.Gates
fmt, clippy (larql-cli), the four CLI tests;
docs/cli.mdrow added.