feat(v0.6): config file parser + resolver + source attribution

Phase 1 foundation. Adds:

- internal/config/configfile.go — strict-key YAML parser for the
  global config file. Unknown top-level keys invalidate the entire
  file (no partial apply); future schema versions are rejected with
  an upgrade message. Platform-appropriate path (XDG_CONFIG_HOME or
  ~/.config on Unix, %APPDATA% on native Windows).

- internal/config/resolver.go — Resolver / ResolvedSetting /
  SettingSource (Builtin, ConfigFileSrc, EnvVar, CLIFlag,
  PlatformOverride). Each setting carries provenance plus an
  Override chain so callers can render "env var (overrides config
  file: X)" lines. session_mode applies the native-Windows
  platform override at the resolver layer with the configured
  value chained as Override. Exports SetConfigPathForTest and
  SetIsNativeWindowsForTest so cross-package tests can isolate
  themselves from host config or simulate the override.

- internal/config/config.go — legacy ResolveRoot / ResolveAgent /
  ResolveSeedDir / ResolveProjectRoot / ResolveSessionMode now
  delegate to LoadResolver so config-file values take effect for
  entry commands. ResolveProjectRoot preserves the "" sentinel for
  built-in source so SearchRoots and doctor checkProjectRoot keep
  their existing fallback semantics. ResolveSessionMode preserves
  the v0.5.3 unknown-value stderr warning, distinguishing env-var
  and config-file sources in the message.

- Tests: 6 LoadConfigFile cases (missing, basic, partial, unknown
  key, future schema, malformed YAML), 3 ConfigFilePath cases
  (XDG / ~/.config / %APPDATA%), 11 resolver cases including
  layering, override chains, path expansion, platform override,
  and SettingSource string rendering.

- Test isolation: vulnerable tests in config_test.go and
  config_roots_test.go that asserted Builtin-source defaults now
  call SetConfigPathForTest to point at a nonexistent path,
  insulating them from developer-host config files. Three cmd
  tests that asserted persistent session_mode behavior now call
  SetIsNativeWindowsForTest to disable the platform override
  (Phase 1 introduces the override; the layering-only behavior
  these tests cover is tested separately in resolver_test.go).

No new dependencies (gopkg.in/yaml.v3 was already in go.mod).
No version bump (lands at the end of Phase 3 per the v0.6 spec).
This commit is contained in:
2026-05-14 21:47:25 -04:00
parent 8304545840
commit 6f80c8bf5c
9 changed files with 970 additions and 39 deletions
+49 -39
View File
@@ -9,39 +9,34 @@ import (
)
// ResolveRoot returns the absolute workspace root path.
// Reads CTASK_ROOT env var, falls back to ~/ai-workspaces (or %USERPROFILE%\ai-workspaces on Windows).
// v0.6: resolution order is CLI flag > CTASK_ROOT env var > config file
// (ctask_root key) > built-in default (~/ai-workspaces or
// %USERPROFILE%\ai-workspaces). No CLI flag participates in Phase 1.
func ResolveRoot() string {
root := os.Getenv("CTASK_ROOT")
if root == "" {
home, _ := os.UserHomeDir()
return filepath.Join(home, "ai-workspaces")
}
return expandPath(root)
return LoadResolver().CtaskRoot().Value
}
// ResolveAgent returns the agent command.
// Reads CTASK_AGENT env var, falls back to "claude".
// v0.6: resolution order is CLI flag > CTASK_AGENT env var > config file
// (default_agent key) > built-in default ("claude"). No CLI flag
// participates in Phase 1.
func ResolveAgent() string {
agent := os.Getenv("CTASK_AGENT")
if agent == "" {
return "claude"
}
return agent
return LoadResolver().DefaultAgent().Value
}
// ResolveSeedDir returns the user general seed directory.
// Reads CTASK_SEED_DIR; falls back to %APPDATA%\ctask\seed on Windows or
// ~/.config/ctask/seed on Unix.
// v0.6: resolution order is CTASK_SEED_DIR env var > config file
// (seed_dir key) > built-in default (%APPDATA%\ctask\seed on Windows,
// ~/.config/ctask/seed on Unix).
func ResolveSeedDir() string {
if v := os.Getenv("CTASK_SEED_DIR"); v != "" {
return expandPath(v)
}
return defaultSeedDir("seed")
return LoadResolver().SeedDir().Value
}
// ResolveProjectSeedDir returns the user project seed directory.
// Reads CTASK_SEED_PROJECT_DIR; falls back to %APPDATA%\ctask\seed-project on Windows
// or ~/.config/ctask/seed-project on Unix.
// v0.6 Phase 1 does not give this setting a config-file equivalent
// (spec lists only seed_dir, singular).
func ResolveProjectSeedDir() string {
if v := os.Getenv("CTASK_SEED_PROJECT_DIR"); v != "" {
return expandPath(v)
@@ -50,14 +45,20 @@ func ResolveProjectSeedDir() string {
}
// ResolveProjectRoot returns the project workspace root override.
// Returns empty string if CTASK_PROJECT_ROOT is not set; callers should fall back
// to ResolveRoot() in that case.
// Returns empty string when no user-supplied value is set (config file
// or env var). The "" sentinel is load-bearing for SearchRoots() and
// doctor's checkProjectRoot, both of which apply their own fallback
// (the v0.5 $CTASK_ROOT/projects/ default).
//
// v0.6: a project_root value supplied via the config file or
// CTASK_PROJECT_ROOT env var is returned verbatim; a missing/empty
// value still returns "".
func ResolveProjectRoot() string {
v := os.Getenv("CTASK_PROJECT_ROOT")
if v == "" {
s := LoadResolver().ProjectRoot()
if s.Source == Builtin {
return ""
}
return expandPath(v)
return s.Value
}
// SearchRoots returns the deduplicated list of workspace roots that all query
@@ -149,23 +150,32 @@ func defaultSeedDir(leaf string) string {
return filepath.Join(home, ".config", "ctask", leaf)
}
// ResolveSessionMode returns "direct" or "persistent" based on CTASK_SESSION_MODE.
// Default (unset/empty) is "direct". Any other value falls back to "direct"
// after printing a stderr warning. Used by entry commands (new, resume, last,
// open) to dispatch between the standard session.Run path and the tmux-backed
// persistent path.
// ResolveSessionMode returns "direct" or "persistent" — the effective
// launch session mode after resolving CLI flag > env var > config file
// > built-in default ("direct"), with the platform-override rule
// applied (persistent → direct on native Windows). Unknown values from
// the env var or config file are coerced to "direct" with a one-line
// stderr warning, preserving the v0.5.3 behavior.
//
// Used by entry commands (new, resume, last, open) to dispatch between
// the standard session.Run path and the tmux-backed persistent path.
func ResolveSessionMode() string {
v := os.Getenv("CTASK_SESSION_MODE")
switch v {
case "", "direct":
return "direct"
case "persistent":
return "persistent"
default:
fmt.Fprintf(os.Stderr,
"[ctask] warning: CTASK_SESSION_MODE=%q is not recognized; using direct mode\n", v)
return "direct"
r := LoadResolver()
s := r.SessionMode()
if s.Value == "direct" || s.Value == "persistent" {
return s.Value
}
// Unknown value path — preserve the v0.5.3 stderr warning. Source
// of the bad value is reported so the user can find where to fix it.
switch s.Source {
case EnvVar:
fmt.Fprintf(os.Stderr,
"[ctask] warning: CTASK_SESSION_MODE=%q is not recognized; using direct mode\n", s.Value)
case ConfigFileSrc:
fmt.Fprintf(os.Stderr,
"[ctask] warning: config session_mode=%q is not recognized; using direct mode\n", s.Value)
}
return "direct"
}
// expandPath expands a leading ~/ and resolves to an absolute path when possible.