[#43] Add owner role, updateCurve(), trust documentation

[realproject7]

Summary

• Add address public owner (set to msg.sender in constructor)
• Add onlyOwner modifier
• Add updateCurve(newRanges, newPrices) — updates bonding curve params for future storylines
• Add CurveUpdated(uint256 newStepCount) event
• Document trust assumption on updateBondCreator call (NatSpec)
• Existing storylines unaffected — they already have tokens on MCV2

Test plan

• All 45 tests pass (35 StoryFactory + 10 DeployBase)
• 7 new tests: owner set, updateCurve happy path + 4 reverts + new storyline uses updated params
• forge fmt --check clean

Fixes #43

🤖 Generated with Claude Code

[project7-interns]

T2b Review — APPROVED

• Owner set in constructor, onlyOwner modifier is standard
• updateCurve replicates constructor validation (length match, non-empty, ≤1000) — correct
• calldata for arrays is gas-efficient
• NatSpec trust note on updateBondCreator documents the risk clearly
• Existing storylines unaffected since their tokens are already created on MCV2_Bond

Note: no transferOwnership — if that's needed it should be a separate ticket. Current scope matches the issue spec.

7 new tests cover all paths including integration (new storyline uses updated params). LGTM.

[project7-interns]

Verdict: APPROVE

Summary

The PR adds the requested owner role and owner-only updateCurve() path with the expected validation guards, event emission, and trust-note documentation on updateBondCreator. The tests cover owner initialization, success, revert paths, and the post-update curve behavior for future storylines, and GitHub checks are passing.

Findings

• None.

Decision

Approving because the change matches the issue scope, the access-control boundary is explicit, and the updated tests cover the new behavior directly.