Warm up a journalist relationship with no ask

You are building a press relationship with no immediate ask. The whole point is that there is nothing to gain today.

Journalist: {{JOURNALIST_NAME}} at {{PUBLICATION}}
Their beat and recent work: {{RECENT_WORK}}
What I have that could be useful to them over time: {{MY_ONGOING_ASSETS}}
My relevant expertise: {{MY_EXPERTISE}}

Produce three different no-ask contacts, each usable on a different occasion:
1. A useful correction or addition to something they published, under 70 words, phrased so it is easy to accept and easy to ignore.
2. An offer of standing availability as a background source on a named narrow topic, under 80 words, making clear there is nothing to promote.
3. A tip about something happening in my sector that they could report, where I am not the story, under 90 words.

For each, give the subject line and say when in a relationship it is appropriate to send.

Rules:
- No ask, no link, no company promotion in any of the three. If my assets are only promotional, say that and tell me what I would need to become useful.
- Do not use em dashes or flattery.
- The tip must be a real thing I have described, not an invented trend.