[MetaROR] Content gaps

Substantive content to add, mostly to balance reproduction vs replication coverage and to add hands-on guidance (R1, R2, R3).

- [ ] #59
- [ ] **Add parallel reproduction sections in Chapter 7** — currently missing "Defining Reproduction Success" and "Interpreting Reproduction Failures". (R3) (#51)
- [ ] **Expand data-integrity checking** — even without raw data, partial checks are possible beyond statcheck/papercheck. This "reproduction light" approach deserves more than five lines; reference Heathers (2025) here too, not just for study selection. (R3) (#57)
- [x] #60
- [x] #61
- [ ] **Add a discussion of incentives and career implications** — current treatment (Koole & Lakens, 2012, in one table cell) is insufficient; expand on career risks and benefits of replication work, especially for ECRs. (R2) (see #47)
- [x] **Balance the MRI deep dive** — Section 9 goes much deeper than other topics. Either pare it back to match the rest, or add comparable depth for another field; also add a section on identifying field-specific challenges for any discipline. (R1) *(see depth-vs-breadth in Points for discussion)*
- [ ] **Discuss what "the same" means in replication** — the ambiguity of "doing the same" (same choices vs same decision strategy) is a central practical dilemma; address the "choice vs strategy" problem explicitly. (R3) *(also flagged in Chapters 5 and 6)* https://github.com/forrtproject/replication-handbook/issues/60
- [x] #63
- [x] #64