docs: polish digest output workflow rules

reader-digest-flow/SKILL.md

@@ -56,7 +56,13 @@ Produce two output views from the same run, preferably in **one generation step*
 1. **Public digest** — for Hugo / public browsing
 2. **Internal review digest** — for chat reporting and operator decisions
 
-Write only the public digest into Hugo using this structure:
+Before publishing, persist digest outputs back into the same reader run directory under:
+
+- `outputs/freshrss/rerun/<run-id>/digest/public_digest.md`
+- `outputs/freshrss/rerun/<run-id>/digest/internal_review_digest.md`
+- `outputs/freshrss/rerun/<run-id>/digest/combined.json`
+
+Then write only the public digest into Hugo using this structure:
 
 - `content/daily/YYYY-MM-DD/index.md`
 
@@ -69,7 +75,6 @@ Recommended **public digest** structure:
 - `今日重点`
 - `趋势观察`
 - `延伸阅读`
-- `信息来源`
 
 Public digest writing rules:
 
@@ -79,6 +84,7 @@ Public digest writing rules:
 - Do **not** expose internal workflow labels or operator language such as `待确认`, `建议沉淀到 IMA`, `keep/review/drop`, or `selection_decision`.
 - Prefer concise but information-dense writing.
 - For each item under `今日重点`, include not only summary and highlights, but also one short editor-style value sentence, for example: `这篇内容更值得关注的原因在于……`.
+- When rendering highlights in public digest, prefer a short label such as `值得关注：` followed by one item per line, instead of packing multiple points into a single long sentence.
 
 Recommended **internal review digest** structure:
 

reader-digest-flow/references/flow.md

@@ -85,7 +85,15 @@ Recommended generation pattern:
 - Ask the model to return both outputs in one response.
 - Prefer a structured response shape (for example JSON with `public_digest_markdown` and `internal_review_digest_markdown`) when post-processing is needed.
 
-Write only the public digest into Hugo here:
+Before publishing, persist the generated digest artifacts back into the same reader run directory:
+
+```text
+outputs/freshrss/rerun/<run-id>/digest/public_digest.md
+outputs/freshrss/rerun/<run-id>/digest/internal_review_digest.md
+outputs/freshrss/rerun/<run-id>/digest/combined.json
+```
+
+Then write only the public digest into Hugo here:
 
 ```text
 /home/ubuntu/zhu/apps/hugo-site/content/daily/YYYY-MM-DD/index.md
@@ -107,7 +115,6 @@ Recommended **public digest** structure:
 - `今日重点`
 - `趋势观察`
 - `延伸阅读`
-- `信息来源`
 
 Public digest constraints:
 
@@ -115,6 +122,7 @@ Public digest constraints:
 - Keep public wording free of internal workflow language.
 - Optimize for concise public readability with solid information density.
 - For each `今日重点` item, add one short editor-style sentence explaining why the item matters in today's digest (for example: `这篇内容更值得关注的原因在于……`).
+- Prefer rendering highlight points as a short public label such as `值得关注：` followed by one bullet per line.
 
 Recommended **internal review digest** structure: