Allow shared workspace bootstrap setup

DICTIONARY.md

@@ -29,10 +29,11 @@ Before adding or changing a term, check this file and ask the user for approval.
 - `artifact`: Preserved file or directory written by SkillGym.
 - `artifact directory`: Directory holding artifacts for one scope such as a suite run, execution, repetition, retry, or session.
 - `workspace`: Directory where the agent runs.
-- `shared workspace`: Run directly in one real directory.
+- `no workspace`: Run directly in an existing working directory with no provisioning.
+- `shared workspace`: One provisioned workspace created once per suite run and reused across executions.
 - `isolated workspace`: Fresh workspace created per execution.
-- `workspace template`: Directory copied into an isolated workspace before execution.
-- `workspace bootstrap`: Command run in an isolated workspace before the agent starts.
+- `workspace template`: Directory copied into an execution workspace before execution.
+- `workspace bootstrap`: Command run in a provisioned workspace before the agent starts.
 - `schedule`: Execution ordering and concurrency policy.
 - `reporter`: Component rendering suite-run progress and results.
 - `skill detection`: Evidence that a skill was used, with confidence and evidence.

README.md

@@ -200,7 +200,7 @@ A workspace is the directory where an execution runs.
 - `shared`: run directly in one real directory
 - `isolated`: create a fresh temporary workspace per case x runner execution
 
-Use `shared` when you want the agent to work against your real project checkout. Use `isolated` when you want clean filesystem state per execution or need to prepare each execution from a template.
+Use `shared` when you want the agent to work against your real project checkout. Shared mode can still seed that directory with `templateDir` and `bootstrap` before the agent starts. Use `isolated` when you want clean filesystem state per execution or need a fresh prepared workspace every time.
 
 You can configure workspaces in `skillgym.config.*` with `run.workspace`, or per suite with a named `workspace` export. Suite-level workspace config overrides config-level `run.workspace`.
 

docs/cases.md

@@ -249,6 +249,13 @@ export type SuiteWorkspaceConfig =
   | {
       mode: "shared";
       cwd?: string;
+      templateDir?: string;
+      bootstrap?: {
+        command: string;
+        args?: string[];
+        timeoutMs?: number;
+        env?: Record<string, string>;
+      };
     }
   | {
       mode: "isolated";
@@ -264,8 +271,8 @@ export type SuiteWorkspaceConfig =
 
 Rules:
 
-- `shared` mode supports `cwd` only
-- `isolated` mode supports `templateDir` and `bootstrap` only
+- `shared` mode supports `cwd`, `templateDir`, and `bootstrap`
+- `isolated` mode supports `templateDir` and `bootstrap` but not `cwd`
 - relative suite workspace paths resolve from the suite file directory
 - isolated workspaces start empty when `templateDir` is omitted
 - `templateDir` copies the full directory contents, including dotfiles and `.git`

docs/workspaces.md

@@ -2,12 +2,13 @@
 
 ## Overview
 
-`skillgym` supports two workspace modes:
+`skillgym` supports three workspace modes:
 
-- `shared`: run directly in a real working directory
+- `none`: run directly in an existing working directory
+- `shared`: create one workspace per suite run and reuse it across executions
 - `isolated`: create a fresh workspace per case x runner execution
 
-Use isolated workspaces when suites need different filesystem setups or when executions should not mutate the original source tree.
+Use `none` when the agent should run in an existing directory. Use `shared` or `isolated` when the suite needs SkillGym to provision a workspace first.
 
 ## Suite-level workspace config
 
@@ -44,22 +45,43 @@ Suite workspace config overrides config-level `run.workspace`.
 
 See `../examples/workspace-isolation-suite.ts` for a complete example that copies a template directory and runs a bootstrap command before the agent starts.
 
-## Shared mode
+## None mode
 
 ```ts
 export const workspace = {
-  mode: "shared",
+  mode: "none",
   cwd: "./fixtures/repo-a",
 };
 ```
 
 Behavior:
 
-- executions run directly in the shared directory
+- executions run directly in `cwd`
 - `cwd` is optional
-- if omitted, shared mode falls back to config `run.cwd`, then `process.cwd()`
+- if omitted, none mode falls back to config `run.cwd`, then `process.cwd()`
 - `templateDir` and `bootstrap` are not allowed
 
+If a suite file does not export `workspace`, SkillGym falls back to config `run.workspace`, then to implicit `none` mode.
+
+## Shared mode
+
+```ts
+export const workspace = {
+  mode: "shared",
+  templateDir: "./fixtures/repo-template",
+};
+```
+
+Behavior:
+
+- one shared workspace is created under `outputDir/workspaces/shared`
+- all executions reuse that same workspace for the suite run
+- `cwd` is not allowed
+- `templateDir` copies into the shared workspace before any execution starts
+- `bootstrap` runs once inside the shared workspace before any execution starts
+- successful suite runs delete the shared workspace
+- failed suite runs preserve the shared workspace
+
 ## Isolated mode
 
 ```ts
@@ -79,11 +101,11 @@ Behavior:
 
 ## Bootstrap commands
 
-Bootstrap commands run inside the isolated workspace before the agent starts.
+Bootstrap commands run inside the execution workspace before the agent starts.
 
 ```ts
 export const workspace = {
-  mode: "isolated",
+  mode: "shared",
   bootstrap: {
     command: "sh",
     args: ["./scripts/bootstrap-workspace.sh", "--seed", "demo"],
@@ -93,22 +115,28 @@ export const workspace = {
 
 Bootstrap command behavior:
 
-- `cwd` is the isolated workspace
+- `cwd` is the provisioned shared workspace or isolated workspace
 - non-zero exit fails that execution before the agent runs
-- stdout and stderr are written to the execution artifact directory
+- shared-workspace bootstrap stdout and stderr are written to `outputDir/workspaces/shared-setup`
+- isolated-workspace bootstrap stdout and stderr are written to the execution artifact directory
 
 Runtime environment variables:
 
 - `SKILLGYM_WORKSPACE`
-- `SKILLGYM_CASE_ID`
-- `SKILLGYM_RUNNER_ID`
 - `SKILLGYM_OUTPUT_DIR`
 - `SKILLGYM_ARTIFACT_DIR`
 
+Isolated workspace bootstrap also receives:
+
+- `SKILLGYM_CASE_ID`
+- `SKILLGYM_RUNNER_ID`
+
 ## Cleanup
 
 Cleanup behavior is fixed:
 
+- successful shared suite runs delete their workspace
+- failed shared suite runs preserve their workspace
 - successful isolated executions delete their workspace
 - failed isolated executions preserve their workspace
 
@@ -120,7 +148,7 @@ Path rules:
 
 - config `run.workspace` paths resolve from the config file directory
 - suite `workspace` paths resolve from the suite file directory
-- `bootstrap.command` and path-like `bootstrap.args` are resolved from the config or suite directory before the bootstrap runs inside the isolated workspace
+- `bootstrap.command` and path-like `bootstrap.args` are resolved from the config or suite directory before the bootstrap runs inside the execution workspace
 
 ## Limitations
 

skills/workspaces.md

@@ -20,6 +20,11 @@ Use isolated workspaces when executions should not mutate the original checkout
 export const workspace = {
   mode: "shared",
   cwd: "./fixtures/repo-a",
+  templateDir: "./fixtures/base-project",
+  bootstrap: {
+    command: "sh",
+    args: ["./scripts/bootstrap-workspace.sh"],
+  },
 };
 ```
 
@@ -28,6 +33,8 @@ Behavior:
 - executions run directly in that directory
 - `cwd` is optional
 - if omitted, Skillgym falls back to config `run.cwd`, then `process.cwd()`
+- `templateDir` copies into that directory before the agent starts
+- `bootstrap` runs in that directory before the agent starts
 
 ## Isolated mode
 

src/cli/run.ts

@@ -63,9 +63,9 @@ export async function runCommand(options: {
     suiteDir: suite.dirPath,
   });
 
-  if (options.cwd !== undefined && effectiveWorkspace.mode === "isolated") {
+  if (options.cwd !== undefined && effectiveWorkspace.mode !== "none") {
     throw new Error(
-      "CLI option --cwd is only supported when the effective workspace mode is shared.",
+      "CLI option --cwd is only supported when the effective workspace mode is none.",
     );
   }
 

src/config.ts

@@ -421,18 +421,18 @@ function parseWorkspaceConfig(value: unknown, configPath: string): SuiteWorkspac
   const templateDir = parseOptionalNonEmptyString(record.templateDir, `${configPath}.templateDir`);
   const bootstrap = parseOptionalBootstrapConfig(record.bootstrap, `${configPath}.bootstrap`);
 
-  if (mode === "shared") {
+  if (mode === "none") {
     if (templateDir !== undefined) {
       throw invalidConfig(
         `${configPath}.templateDir`,
-        'expected this key to be omitted when workspace mode is "shared"',
+        'expected this key to be omitted when workspace mode is "none"',
       );
     }
 
     if (bootstrap !== undefined) {
       throw invalidConfig(
         `${configPath}.bootstrap`,
-        'expected this key to be omitted when workspace mode is "shared"',
+        'expected this key to be omitted when workspace mode is "none"',
       );
     }
 
@@ -442,6 +442,21 @@ function parseWorkspaceConfig(value: unknown, configPath: string): SuiteWorkspac
     };
   }
 
+  if (mode === "shared") {
+    if (cwd !== undefined) {
+      throw invalidConfig(
+        `${configPath}.cwd`,
+        'expected this key to be omitted when workspace mode is "shared"',
+      );
+    }
+
+    return {
+      mode,
+      templateDir,
+      bootstrap,
+    };
+  }
+
   if (cwd !== undefined) {
     throw invalidConfig(
       `${configPath}.cwd`,
@@ -457,8 +472,8 @@ function parseWorkspaceConfig(value: unknown, configPath: string): SuiteWorkspac
 }
 
 function parseWorkspaceMode(value: unknown, configPath: string): SuiteWorkspaceConfig["mode"] {
-  if (value !== "shared" && value !== "isolated") {
-    throw invalidConfig(configPath, 'expected "shared" or "isolated"');
+  if (value !== "none" && value !== "shared" && value !== "isolated") {
+    throw invalidConfig(configPath, 'expected "none", "shared", or "isolated"');
   }
 
   return value;
@@ -623,10 +638,22 @@ function resolveWorkspaceConfigPaths(
   config: SuiteWorkspaceConfig,
   configDir: string,
 ): SuiteWorkspaceConfig {
+  if (config.mode === "none") {
+    return {
+      mode: "none",
+      cwd: config.cwd === undefined ? undefined : path.resolve(configDir, config.cwd),
+    };
+  }
+
   if (config.mode === "shared") {
     return {
       mode: "shared",
-      cwd: config.cwd === undefined ? undefined : path.resolve(configDir, config.cwd),
+      templateDir:
+        config.templateDir === undefined ? undefined : path.resolve(configDir, config.templateDir),
+      bootstrap:
+        config.bootstrap === undefined
+          ? undefined
+          : resolveBootstrapConfigPaths(config.bootstrap, configDir),
     };
   }
 

src/domain/case.ts

@@ -10,11 +10,17 @@ export interface WorkspaceBootstrapConfig {
 
 export type SuiteWorkspaceConfig =
   | {
-      mode: "shared";
+      mode: "none";
       cwd?: string;
       templateDir?: never;
       bootstrap?: never;
     }
+  | {
+      mode: "shared";
+      cwd?: never;
+      templateDir?: string;
+      bootstrap?: WorkspaceBootstrapConfig;
+    }
   | {
       mode: "isolated";
       cwd?: never;

src/reporters/contract.ts

@@ -6,7 +6,7 @@ import type { Case } from "../domain/case.js";
 export interface ReporterContext {
   isInteractive: boolean;
   cwd: string;
-  workspaceMode: "shared" | "isolated";
+  workspaceMode: "none" | "shared" | "isolated";
   suitePath: string;
   suiteRunArtifactDir: string;
   selectedCaseCount: number;

src/reporters/standard.ts

@@ -105,10 +105,13 @@ export function createStandardReporter(options: StandardReporterOptions = {}): B
     onSuiteStart(event) {
       printBanner({ kind: "compact", stdout });
       writeLine(`${colors.dim("Suite     ")}${accent(event.context.suitePath)}`, stdout);
-      writeLine(
-        `${colors.dim("Workspace ")}${colors.bold(event.context.workspaceMode === "shared" ? event.context.cwd : `${event.context.workspaceMode} per execution`)}`,
-        stdout,
-      );
+      const workspaceLabel =
+        event.context.workspaceMode === "shared"
+          ? event.context.cwd
+          : event.context.workspaceMode === "isolated"
+            ? "isolated per execution"
+            : `${event.context.cwd} (none)`;
+      writeLine(`${colors.dim("Workspace ")}${colors.bold(workspaceLabel)}`, stdout);
       writeLine(`${colors.dim("Cases     ")}${String(event.context.selectedCaseCount)}`, stdout);
       if (event.context.tagFilter !== undefined) {
         writeLine(`${colors.dim("Tags      ")}${event.context.tagFilter.join(", ")}`, stdout);