feat(openspec): propose Podcast MVP

openspec/changes/2025-11-17-podcast-mvp/proposal.md

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+# Proposal: Podcast MVP
+
+Status: draft
+Authors: Media Team
+Owners: Media Lead, Web Lead
+Created: 2025-11-17
+Scope: spec
+Related: openspec/specs/feature-podcast.md
+
+Summary
+- Host and distribute podcast episodes with transcripts, accessible player, and RSS feed generation.
+
+Motivation
+- Make episodes accessible and discoverable with transcripts and standardized feeds.
+
+Requirements
+- Accessibility: transcript availability, keyboard/focusable controls, captions where applicable.
+- Media: upload, loudness normalization, artwork standards.
+- Distribution: RSS conformant to podcast clients; open embeds.
+
+API
+- Episodes CRUD; media processing callbacks; feed endpoints.
+
+Test Plan
+- Player a11y tests; feed validation; media processing happy paths and failures.
+
+Rollout
+- Seed pilot episodes; validate feeds on major clients.
+
+Acceptance Criteria
+- Transcripts published; feed validates; accessible player verified.
+
+Slash Commands
+- `/review areas=media,web,mobile,accessibility,security`
+- `/apply spec=openspec/specs/feature-podcast.md`
+- `/archive link=<PR>`
+