User-test surfaced the bug: with `deep` (mistral-nemo-12b) active,
running `list files` -> y on `CMD: ls` -> `Are there directory entries
beginning with "lor"?` returned a Jinja exception:
api: ... Error: Jinja Exception: After the optional system message,
conversation roles must alternate user/assistant/user/assistant/...
Cause: §6 specified "exec output injected into context uses role 'user'
with a prefix tag '[exec output]'." This works for permissive templates
(qwen2.5-coder-1.5b, the `fast` preset) but produces a back-to-back
user/user pair on strict templates that enforce the OpenAI alternation
contract — `[exec output]` user turn followed by the user's actual
follow-up question.
Fix:
context.lua:
- new field `pending_exec_output` (initially nil)
- new method `:append_exec_output(out)` buffers (concat on subsequent
captures so multi-shell-then-ai still merges everything)
- new method `:append_user(content)` flushes buffered exec output as
a `[exec output]\n...\n\n` prefix and appends a user turn
- `:reset()` also clears the buffer
repl.lua:
- run_shell calls ctx:append_exec_output(out) instead of
ctx:append({role="user", content="[exec output]\n"..out})
- ask_ai calls ctx:append_user(text) instead of raw :append; saves
prev_pending so a broker error can restore the buffer for retry
PHASE0.md §6:
- amended the role-injection paragraph to describe the buffer-and-
prepend policy; the §3 invariants list is untouched (this was a §6
design detail, not a locked invariant)
Verification:
- context unit tests cover: alternation after the failing sequence,
multi-shell merge, reset clears buffer, broker-error retry path
- live reproduction against `deep` (mistral-nemo) of the exact
user-reported sequence succeeds; model responds with a sensible
`CMD: ls | grep '^lor'` instead of a Jinja exception
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Phase 0 implementation per PHASE0.md §6, §8.
Context.new(opts) constructs with the §6 default system prompt (the
`CMD: ` extraction contract is hard-coded in there per §3 — locked
substrate, do not edit). opts overrides: system_prompt, max_turns
(default 40), token_budget (default 4096; visibility only in Phase 0
per Q1, deferred to Phase 3 for accurate tokenization).
API:
ctx:append({role, content}) record a turn
ctx:to_messages() [{system,...}, ...turns] for broker.chat
ctx:enforce_budget() evict pairs (user+assistant) until
#turns <= max_turns; returns count
ctx:estimate_tokens() char/4 heuristic
ctx:reset() drop all turns (system_prompt kept)
System prompt is the §6 phrasing verbatim including the `CMD: ` clause
— stored on the context, NOT in self.turns, so it is prepended freshly
on every to_messages() call.
Smoke covers basic ops, no-evict-at-max, evict-on-overflow, bulk
eviction (14 turns -> 4), reset.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- README, .gitignore, CLAUDE.md (project conventions)
- docs/PHASE0.md — full Phase 0 manifest (locked substrate)
- 10 root .lua modules + 4 ffi/ bindings, all stubs raising NotImplemented
with module-scoped responsibilities matching the manifest
- config.lua wired to current dirac/hossenfelder endpoints (qwen-coder-7b
snappy/32k + cloud via OpenRouter through hossenfelder)
File names match docs/PHASE0.md §4 exactly. Module bodies fill in across
later phases; the tree shape is locked.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
marfrit
claude-noether