Slim notio note types to 4 core + add series/refs frontmatter

Goal

(promoted from note)

Context

(see source note)

Prompt

Read the issue at /storage2/arash/projects/projio/docs/log/issue/issue-arash-20260326-162053-576639.md. Implement the proposal: 1) Slim default note types in notio config to idea, issue, task, meeting (make daily/weekly/commit/personal optional/deprecated). 2) Add 'series' and 'refs' frontmatter fields support to notio's note creation and query system. 3) Update note templates accordingly. Work in the notio package at packages/notio/.

Acceptance Criteria

• [ ]

Result

(pending)