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fix: config merge concatenates arrays instead of replacing (#106)

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deep_merge_objects now concatenates arrays when both layers provide
the same key. Previously permissions.allow, hooks.PreToolUse, etc.
from earlier config layers (e.g. ~/.claw/settings.json) were silently
discarded when a later layer (e.g. project .claw/settings.json) set
the same key. Now arrays are merged additively across layers.

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bellman
2026-06-05 09:57:22 +09:00
parent aca6584fd5
commit f8822aabdb
2 changed files with 12 additions and 3 deletions
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ROADMAP.md
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@@ -2931,7 +2931,7 @@ ear], /color [scheme], /effort [low|medium|high], /fast, /summary, /tag [label],
**Source.** Jobdori dogfood 2026-04-18 against `/tmp/cdZ` on main HEAD `6580903` in response to Clawhip pinpoint nudge at `1494819785676947543`. Joins **truth-audit / diagnostic-integrity** (#80–#84, #86, #87, #89, #100, #102, #103) — status JSON lies about the active model. Joins **two-paths-diverge** (#91, #101, #104) — three separate model-resolution paths with incompatible outputs. Sibling of **#100** (status JSON missing commit identity) and **#102** (doctor silent on MCP reachability) — same pattern: status/doctor surfaces incomplete or wrong information about things they claim to report. Natural bundle: **#100 + #102 + #105** — status/doctor surface completeness triangle (commit identity + MCP reachability + model-resolution truth). Also **#91 + #101 + #104 + #105** — four-way parallel-entry-point asymmetry (config↔CLI parser, CLI↔env silent-vs-loud, slash↔CLI export, config↔status↔dispatch model). Session tally: ROADMAP #105.
106. **Config merge uses `deep_merge_objects` which recurses into nested objects but REPLACES arrays — so `permissions.allow`, `permissions.deny`, `permissions.ask`, `hooks.PreToolUse`, `hooks.PostToolUse`, `hooks.PostToolUseFailure`, and `plugins.externalDirectories` from an earlier config layer are silently discarded whenever a later layer sets the same key. A user-home `~/.claw/settings.json` with `permissions.deny: ["Bash(rm *)"]` is silently overridden by a project `.claw.json` with `permissions.deny: ["Bash(sudo *)"]` — the user's `Bash(rm *)` deny is GONE and never surfaced. Worse: a workspace-local `.claw/settings.local.json` with `permissions.deny: []` silently removes every deny rule from every layer above it** — dogfooded 2026-04-18 on main HEAD `71e7729` from `/tmp/cdAA`. MCP servers *are* merged by-key (distinct server names from different layers coexist), but permission-rule arrays and hook arrays are NOT — they are last-writer-wins for the entire list. This makes claw-code's config merge incompatible with any multi-tier permission policy (team default → project override → local tweak) that a security-conscious team would want, and it is the exact failure mode #91 / #94 / #101 warned about on adjacent axes.
106. **DONE — Config merge uses `deep_merge_objects` which recurses into nested objects but REPLACES arrays — so `permissions.allow`, `permissions.deny`, `permissions.ask`, `hooks.PreToolUse`, `hooks.PostToolUse`, `hooks.PostToolUseFailure`, and `plugins.externalDirectories` from an earlier config layer are silently discarded whenever a later layer sets the same key. A user-home `~/.claw/settings.json` with `permissions.deny: ["Bash(rm *)"]` is silently overridden by a project `.claw.json` with `permissions.deny: ["Bash(sudo *)"]` — the user's `Bash(rm *)` deny is GONE and never surfaced. Worse: a workspace-local `.claw/settings.local.json` with `permissions.deny: []` silently removes every deny rule from every layer above it** — dogfooded 2026-04-18 on main HEAD `71e7729` from `/tmp/cdAA`. MCP servers *are* merged by-key (distinct server names from different layers coexist), but permission-rule arrays and hook arrays are NOT — they are last-writer-wins for the entire list. This makes claw-code's config merge incompatible with any multi-tier permission policy (team default → project override → local tweak) that a security-conscious team would want, and it is the exact failure mode #91 / #94 / #101 warned about on adjacent axes.
**Concrete repro.**
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