feat: Add sprint cadence documentation and update related system references

project-knowledge/03-context/process/sprint-cadence.md

@@ -0,0 +1,63 @@
+---
+type: process
+project: fidelity
+status: active
+people: [quy-mai]
+related: [../process/index.md, ../../04-people/quy-mai.md]
+updated: 2026-04-20
+tags:
+  - process
+  - fidelity
+  - scrum
+  - sprint
+---
+
+# Sprint Cadence And Ceremonies
+
+## Goal
+
+Capture the Fidelity-side Scrum rhythm so work status, planning, and story timing are interpreted correctly.
+
+---
+
+## Current Understanding
+
+- On the Fidelity side, Quy Mai acts as the Scrum Master.
+- Quy manages the Scrum ceremonies.
+- Confirmed ceremonies include:
+  - retrospective
+  - DSE / daily syncs
+  - sprint review
+  - sprint planning
+- Retrospectives use Miro.
+- Jira is the work-tracking system.
+
+---
+
+## Sprint Model
+
+- Sprints are two weeks long.
+- Sprint naming uses the `PDIAP 26QX.Y` pattern.
+- The examples currently captured are:
+  - `PDIAP 26Q1.1` (`1/01` - `1/15`)
+  - `PDIAP 26Q1.2` (`1/15` - `1/29`)
+  - `PDIAP 26Q1.3` (`1/29` - `2/12`)
+  - `PDIAP 26Q1.4` (`2/12` - `2/25`)
+  - `PDIAP 26Q1.5` (`2/26` - `3/12`)
+  - `PDIAP 26Q1.6` (`3/12` - `3/26`)
+  - `PDIAP 26Q2.1` (`3/26` - `4/09`)
+  - `PDIAP 26Q2.2` (`4/09` - `4/23`)
+
+---
+
+## Working Implications
+
+- Story timing and status should be interpreted in the context of the current two-week sprint.
+- Quy is a key contact for ceremony timing, sprint structure, and Jira process expectations on the Fidelity side.
+- When discussing planning or delivery windows, prefer the explicit sprint label when it is known.
+
+---
+
+## Open Question
+
+- The corrected examples align with the expected quarter-based naming pattern: year + quarter + sprint number within that quarter.