chore(openspec): drop 9 superseded proposals + 11 stub archive files

Drop 9 batch proposals that are superseded by the boocode-lift-analysis
(boocontext-audit, conductor upgrades, self-healing/verify-gate skills):
add-3tier-memory, import-llm-evaluator, import-pregel-engine, plugin-platform,
conductor-evolution, code-intelligence-upgrade, dev-workflow, ui-overhaul,
agent-reliability.

Delete 11 stub archive files (49-66B each, 'Status: Shipped. Archived.' only)
that provide zero documentation value over the existing CHANGELOG.md + git tags.

openspec/changes/archived/2026-06-07-hybrid-workflow-engine/specs/script-execution/spec.md

@@ -0,0 +1,44 @@
+## ADDED Requirements
+
+### Requirement: Inline script execution
+Script nodes SHALL execute inline TypeScript (runtime: `bun`) or Python (runtime: `uv`) code and capture stdout as the node output.
+
+#### Scenario: Bun inline execution
+- **WHEN** a script node has `runtime: bun` and `script: console.log("hello")`
+- **THEN** the executor SHALL run the script via `bun -e`
+- **THEN** stdout SHALL be captured as `$nodeId.output`
+
+#### Scenario: Python inline execution
+- **WHEN** a script node has `runtime: uv` and `script: print("hello")`
+- **THEN** the executor SHALL run the script via `uv run python -c`
+- **THEN** stdout SHALL be captured as `$nodeId.output`
+
+### Requirement: Dependency installation
+Script nodes SHALL support a `deps:` array that installs dependencies before execution.
+
+#### Scenario: Bun with npm deps
+- **WHEN** a script node has `runtime: bun` and `deps: ["lodash", "zod"]`
+- **THEN** the executor SHALL run `bun install lodash zod` before executing
+
+#### Scenario: Python with pip deps
+- **WHEN** a script node has `runtime: uv` and `deps: ["requests", "click"]`
+- **THEN** the executor SHALL run `uv pip install requests click` before executing
+
+### Requirement: Named script files
+Script nodes MAY reference named scripts from a `.archon/scripts/` directory by name instead of inline code.
+
+#### Scenario: Named script discovery
+- **WHEN** a script node has `script: analyze` and `scripts/analyze.ts` exists
+- **THEN** the executor SHALL load and execute the file
+
+#### Scenario: Runtime inferred from extension
+- **WHEN** a script has `runtime: bun` and the named file has a `.ts` extension
+- **THEN** the executor SHALL run it via `bun run`
+
+### Requirement: Script timeout
+Script nodes SHALL support a `timeout:` field in milliseconds. If execution exceeds the timeout, the process SHALL be killed and the node SHALL fail.
+
+#### Scenario: Timeout exceeded
+- **WHEN** a script node sets `timeout: 5000` and the script runs for 10 seconds
+- **THEN** the process SHALL be killed after 5 seconds
+- **THEN** the node SHALL be marked as failed with a timeout error