docs(changelog): fold the later entries into the tightened style

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.

[Chemaclass]

🤔 Background

448da9b rewrote the unreleased notes to one line each — what changed, the effect, an issue reference, and none of the debugging narrative. Six PRs merged after it added entries written from their PR bodies instead, so the section had two registers in it, and two separate ### Added headings.

💡 Changes

Those six are now in the same shape as the rest.

	before	after
entries	23	23
### Added headings	2	1
longest line	353 chars	180
entries without a ref	5	0

Nothing is dropped. Every user-facing fact is still stated. What goes is the reasoning about why a bug existed — that belongs in the commit and the PR, not in notes someone reads to decide whether to upgrade.

🔗 The five missing references

All were changes whose PRs landed in this series — #967, #968, #969, #977, #978 — so the numbers are known rather than guessed. Each was checked against the commit that names it.

✅ Verification

make lint · every (#N) in the section resolves to a merged PR or an existing issue.