fix: include routine-execution issues in agent inbox-lite (#3329)

## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies
> - Agents query their own inbox via `/agents/me/inbox-lite` to discover
assigned work
> - `issuesSvc.list()` excludes `routine_execution` issues by default,
which is appropriate for the board UI
> - But agents calling `inbox-lite` need to see **all** their assigned
work, including routine-created issues
> - Without `includeRoutineExecutions: true`, agents miss their own
in-progress issues after the first delegation step
> - This causes routine-driven pipelines to stall — agents report "Inbox
empty" and exit
> - This pull request adds `includeRoutineExecutions: true` to the
`inbox-lite` query
> - The benefit is routine-driven pipelines no longer stall after
delegation

## What Changed

- Added `includeRoutineExecutions: true` to the `issuesSvc.list()` call
in the `/agents/me/inbox-lite` route (`server/src/routes/agents.ts`)

## Verification

1. Create a routine that assigns an issue to an agent
2. Trigger the routine — first run works via `issue_assigned` event
injection
3. Agent delegates (creates a subtask) and exits
4. On next heartbeat, agent queries `inbox-lite`
5. **Before fix**: issue is invisible, agent reports "Inbox empty"
6. **After fix**: issue appears in inbox, agent continues working

Tested on production instance — fix resolves the stall immediately.

## Risks

Low risk — additive change, only affects agent-facing inbox endpoint.
Board UI keeps its default behavior (routine executions hidden for clean
view).

## Model Used

Claude Opus 4.6 (`claude-opus-4-6`) via Claude Code CLI — high thinking
effort, tool use.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

Closes #3282

server/src/routes/agents.ts

@@ -1105,6 +1105,7 @@ export function agentRoutes(db: Db) {
     const rows = await issuesSvc.list(req.actor.companyId, {
       assigneeAgentId: req.actor.agentId,
       status: "todo,in_progress,blocked",
+      includeRoutineExecutions: true,
     });
 
     res.json(