doc: impl details of #[callback_unwrap]

[dj8yfo]

• resolves doc: document host functions used by #[callback_unwrap] #1312
• resolves all remaining bullets from doc: add discovered intra-doc links and urls with usages within repo to rustdoc of near-sdk #1265
  • actually, most of them were already resolved, just not all comments in doc: examples for Near-related host functions #1259 were marked as resolved, so this pr
    only improved wording/fmt, where it was off for checked items
• resolves doc: add discovered intra-doc links and urls with usages within repo to rustdoc of near-sdk #1265

---

this is a re-open of #1319 , which failed due to some mysterious reason in https://github.com/near/near-sdk-rs/actions/runs/13638771921/job/38125370846 on windows. there's a suspicion that was a one-off fluke of Swatinem/rust-cache@v1, but no hard proof for that.

[akorchyn]

@race-of-sloths score 8

[race-of-sloths]

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The pull request is merged, you have 24 hours to finalize your scoring. The scoring ends Fri Mar 7 07:44:04 2025

Reviewer	Score
@akorchyn	8

Your contribution is much appreciated with a final score of 8!
You have received 80 Sloth points for this contribution

@akorchyn received 25 Sloth Points for reviewing and scoring this pull request.

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[dj8yfo]

todo: this link has to be changed to blob/commit and line ?plain=1#Lxx adjusted to what the link was an example for

The following can be changed to blob/commit links too in a similar fashion (and lines ?plain=1#Lxx
adjusted to lines containing api to what the links were examples of):

├──near-sdk
│  └──src
│     └──environment
│        └──env.rs
│           ├──764: /// Example usages of this low-level api are <https://github.com/near/near-sdk-rs/tree/master/examples/factory-contract/low-level/src/lib.rs> and <https://github.com/near/near-sdk-rs/blob/master/examples/cross-contract-calls/low-level/src/lib.rs>
│           ├──820: /// Example usages of this low-level api are <https://github.com/near/near-sdk-rs/tree/master/examples/factory-contract/low-level/src/lib.rs> and <https://github.com/near/near-sdk-rs/blob/master/examples/cross-contract-calls/low-level/src/lib.rs>
│           └──1477: /// Example usages: [one](https://github.com/near/near-sdk-rs/tree/master/examples/cross-contract-calls/low-level/src/lib.rs), [two](https://github.com/near/near-sdk-rs/tree/master/examples/factory-contract/low-level/src/lib.rs)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 80.16%. Comparing base (a07a26f) to head (dd4347d).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
near-sdk/src/utils/mod.rs	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1321      +/-   ##
==========================================
- Coverage   80.18%   80.16%   -0.03%     
==========================================
  Files         104      104              
  Lines       14829    14831       +2     
==========================================
- Hits        11891    11889       -2     
- Misses       2938     2942       +4     

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