Add provider/model selection for schedules and workspace fetch debug logging

- Unify resolveProviderAndModel across CLI and server, supporting
  provider/model syntax (e.g. codex/gpt-5.4) for agent runs and schedules
- Add --provider flag to schedule create CLI and both MCP schedule tools
- Add structured debug logging to workspace fetch hydrate, sidebar
  refresh, and real-time update paths
- Update orchestrate skill references

skills/paseo-orchestrate/references/impl-phase.md

@@ -26,6 +26,26 @@ After each phase:
 
 Use the Paseo **create agent** tool with `background: true` and `notifyOnFinish: true`. **If in worktree mode, always set `cwd` to the worktree path.**
 
+### How to describe the work
+
+**Describe the problem, not the solution.** Your prompt should tell the agent:
+- What's wrong or what needs to be built (the goal)
+- How it currently fails (error output, test output, user-visible behavior)
+- The acceptance criteria (what "done" looks like)
+
+**Do NOT tell the agent:**
+- Which specific lines to change
+- What code to write
+- Which functions to call or which patterns to use
+
+The agent reads the plan and the code. It will figure out the implementation. If you're writing specific line numbers or code snippets in the prompt, you're micromanaging and it will backfire — the agent takes you literally and skips its own judgment.
+
+Bad: "In `new-workspace.spec.ts` at line 164, change the tab assertion from `getByText('New Agent')` to `getByTestId(/workspace-tab-agent_/)`"
+
+Good: "The new-workspace E2E test is failing. The test creates a workspace via empty submit, but then the tab assertion fails because it looks for text 'New Agent' which doesn't match the actual tab label. Here's the error output: [paste error]. Fix the test and run it to confirm it passes."
+
+### Prompt template
+
 ```
 title: "impl-<scope>-<phase>"
 agentType: <resolved from providers.impl>
@@ -41,9 +61,9 @@ Do not bolt new code on top of existing code. If the existing code isn't shaped
 
 Work TDD: write a failing test first, then make it pass. All tests must be green when done — not just your new ones, the full relevant suite. If you find a broken test, fix it.
 
-<describe the specific phase work and acceptance criteria>
+<describe the problem and acceptance criteria — NOT the solution>
 
-Run typecheck and tests when done. Do NOT commit."
+When done: run typecheck AND run any tests you modified or that cover your changes. Both must pass. Do NOT commit."
 ```
 
 ## UI Passes