refactor(#885): extract loadConfig cluster into config-loader.cts (#886)

ADR-857 rollout phase 2e — the largest core.cts extraction. Move the
configuration-loading subsystem (loadConfig + _getConfigDefault/
_getNestedConfigDefault/CONFIG_DEFAULTS/_deepMergeConfig, isGitIgnored +
_gitIgnoredCache, _warnUnknownProfileOverrides + RUNTIME_OVERRIDE_TIERS + the
dedup Sets, _resetRuntimeWarningCacheForTests) out of core.cts into a new leaf
module src/config-loader.cts. core.cts re-exports the public surface
(loadConfig, isGitIgnored, CONFIG_DEFAULTS, RUNTIME_OVERRIDE_TIERS,
_resetRuntimeWarningCacheForTests); 12+ callers unchanged.

Cycle-free: config-loader imports only leaves (configuration, config-schema,
planning-workspace, shell-command-projection, core-utils, model-catalog). All
core-internal helpers loadConfig touches moved with it to avoid a cycle. core
keeps CANONICAL_CONFIG_DEFAULTS for its model-resolver functions, which now
resolve loadConfig via the binding — this unblocks the final model-resolver
extraction (2f). core.cts: 1275 -> 792 lines.

Repointed tests/config-field-docs.test.cjs (a docs-parity source check) to read
the CONFIG_DEFAULTS literal from its new home (config-loader.cjs). New-CLI-module
checklist done (.gitignore, eslint, INVENTORY 95->96 + row, manifest,
ARCHITECTURE, CONTEXT.md "Config Loader Module"). Adds tests/config-loader.test.cjs
(27 tests: behavioral + shim-identity + adversarial config fixtures).

Gates: lint, code-review, security-review (prototype-pollution guard confirmed
intact), codex adversarial-review (0 findings; byte-identical move). Mac 4115
pass; clean-build docker: full-suite hit the local mirror's known incremental-tsc
non-determinism on an unrelated re-exported symbol (findPhaseInternal, from
already-merged 2d), but a clean targeted rebuild of the affected file passed
163/0 — CI's clean full matrix is the authoritative gate.

Closes #885

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Tom Boucher
2026-06-08 15:36:38 -04:00
committed by GitHub
parent 0a11d361ca
commit a74e71b049
10 changed files with 948 additions and 511 deletions

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@@ -342,6 +342,7 @@ Node.js CLI utility (`gsd-tools.cjs`) with domain modules split across `gsd-core
| Module | Responsibility |
| ---------------------- | --------------------------------------------------------------------------------------------------- |
| `config-loader.cjs` | Project config loading — defaults merge, legacy-key migration, workstream overlay, unknown-key/profile-override validation (extracted from `core.cjs`, ADR-857) |
| `core-utils.cjs` | Shared low-level utility primitives — POSIX path normalization, sub-repo/subdirectory scanning, phase file stats, slug/one-liner/plan-id helpers, time-ago (extracted from `core.cjs`, ADR-857) |
| `core.cjs` | Shared utilities; compatibility re-exports for planning, I/O (`io.cjs`), and phase-id helpers |
| `io.cjs` | CLI I/O primitives — output/error emission, JSON-error mode, large-payload temp-file spillover |

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@@ -280,6 +280,7 @@
"command-arg-projection.cjs",
"command-routing-hub.cjs",
"commands.cjs",
"config-loader.cjs",
"config-schema.cjs",
"config-types.cjs",
"config.cjs",

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@@ -370,7 +370,7 @@ The `gsd-planner` agent is decomposed into a core agent plus reference modules t
---
## CLI Modules (95 shipped)
## CLI Modules (96 shipped)
Full listing: `gsd-core/bin/lib/*.cjs`.
@@ -391,9 +391,10 @@ Full listing: `gsd-core/bin/lib/*.cjs`.
| `command-arg-projection.cjs` | Typed flag and positional argument projection helpers shared across command-family routers |
| `command-routing-hub.cjs` | Pure-result dispatch hub that centralizes mode decision (SDK vs CJS), error taxonomy, and no-throw contract for all command-family routers (#3788) |
| `commands.cjs` | Misc CLI commands (slug, timestamp, todos, scaffolding, stats) |
| `config-loader.cjs` | Project config loading — defaults merge, legacy-key migration, workstream overlay, unknown-key/profile-override validation (extracted from `core.cjs`, ADR-857) |
| `config-schema.cjs` | Single source of truth for `VALID_CONFIG_KEYS` and dynamic key patterns; imported by both the validator and the config-schema-docs parity test |
| `config.cjs` | `config.json` read/write, section initialization; imports validator from `config-schema.cjs` |
| `config-types.cjs` | TypeScript type definitions for the `model_policy` config block — `ModelPolicyConfig`, `TierEntry`, `RuntimeTiers`; compiled from `src/config-types.cts` at publish time (ADR-457) |
| `config.cjs` | `config.json` read/write, section initialization; imports validator from `config-schema.cjs` |
| `configuration.cjs` | Configuration Module — canonical config loading, legacy-key normalization, defaults merge, and explicit on-disk migration; source of truth for both SDK and CJS consumers |
| `context-utilization.cjs` | Pure classifier for `gsd-health --context` — turns (tokensUsed, contextWindow) into a `{ percent, state }` triage result against the 60%/70% fracture-point thresholds (#2792) |
| `core-utils.cjs` | Shared low-level utilities — POSIX path normalization, sub-repo/subdirectory scanning, phase file stats, slug/one-liner/plan-id helpers, time-ago (extracted from `core.cjs`, ADR-857) |