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Closes STEER-20261102-201234-7200 (read_file capped at 6000 while the schema
promised 32000).
Budgets (module-aiassist.js + new modules/core/model-profiles.js):
- one resolver, precedence: call arg -> loop profile -> model profile ->
ai-config -> code default. Keys: read-page-chars, read-result-chars,
tool-context-budget, fetch-chars.
- model classes tiny/small/mid/large keyed by id then by size token; `mid`
reproduces the old numbers so nothing moves for a mid model.
- _clipToolResult now clips the `content` field, never the serialised JSON
envelope: clipping the envelope deleted truncated/next_offset, so a 16k page
lost its continuation pointer (the reported symptom).
- read_file's schema no longer promises a number the model class may not give.
Telemetry:
- _recordToolCall keeps sizes, duration, ok and a 120-char arg preview instead
of the whole payload; ai-stats prints calls / ok% / avg ms / KB / truncation
from localStorage webx11_tool_stats.
Server (api/proxy-api.py):
- /api/extract honours max_chars (default 12000, cap 100000) and returns
content_chars + truncated; the bs4 branch is no longer uncapped while the
regex fallback was silently cut at 10 000.
BEHAVIOUR CHANGE: num_ctx for a model with no explicit setting now follows the
class default (16384 -> 65536 for cloud/large, 8192 for tiny). Cloud models bill
on tokens used, so cost is unchanged; local models get a bigger KV cache.
Two build traps, both now documented in AGENTS.md:
- model-profiles.js must be the FIRST entry in CORE_FILES and must export the
MODEL_PROFILES global (a TDZ typeof throws; without the global every budget
silently falls back to the code default).
- a budget key needs the setter branch AND the constructor loader at
module-aiassist.js:49 - persisting without restoring looks fine until reload.
Verified: test-tool-context-bound 23/23 (RED before: E1-E4 + TypeError on
_toolLimit); live bundle read_page 32000 / result 12000 / budget 48000 /
fetch 12000 and _ctxTokens 65536 for gemma4:31b-cloud; /api/extract 28970 ->
500 chars with truncated true; ai-config write+restore probe 6/6.
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a corrupt memory graph
The three items the last review and probes left open, each with a test that is red on HEAD.
- MAINT-023 (module-aiassist.js): one agentic turn grew without limit — every role:'tool' body
was pushed verbatim and only this.context was trimmed BETWEEN turns (measured 6 -> 112 705
tokens across 8 model calls against maxContextTokens 12 000). Observations are now clipped to
maxToolResultChars (6 000) with a note saying how much was withheld and to re-read with
offset/limit, and _boundToolContext() elides the oldest tool bodies once the running total
passes toolContextBudgetChars (24 000), always keeping the newest 4 verbatim. The ceiling is
turn-independent: the same ~26 k chars at 8 turns and at 20.
- MAINT-024 (modules/ext/skill-pack-core.js): the command printed "✅ Skill created" with
fs.writeFile()'s boolean discarded (probe: fresh VFS, success printed, no file), stripped
invalid characters instead of rejecting the name (My-Skill -> y-kill, DevOps_Thing ->
evpshing), and treated an unreadable /path argument as the skill body. Now: kebab-case is
validated (uppercase normalises and the final name is reported; anything else is refused),
/skills is created on first use, the write and index results are checked, and an unreadable
body path is an error.
- MAINT-003 (module-memory-graph.js): a corrupt store looked exactly like a fresh install —
fsReadJSON returns null on a parse failure, so 85 nodes could vanish with no warning and no
copy. The probe confirmed the loss: seed 6 nodes, truncate nodes.json and export.json, reload
-> 1 node, no message, nothing in .trash. _quarantineCorrupt() now keeps the unreadable file
as <name>.corrupt, warns, and then loads from whatever remains.
Tests: test-tool-context-bound.js (11), test-skill-create.js (16), test-memory-graph-recovery.js
(8). RED on HEAD: tool-context crashes on _clipToolResult (exit 1), skill-create 16 assertions
fail on the missing file/index, memory-graph B1/B2/C1 fail (no warning, no .corrupt copy).
Suite now 13/13 files green; maintain --fix reports "node tests 13/13 pass".
Live on v4.6.107: skill-create My-Skill -> ✅ "my-skill"; DevOps_Thing -> Invalid skill name;
/does/not/exist.md -> Cannot read skill body; only my-skill in the index.
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