diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index cfda194..3284e7b 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Setup pinned development toolchain
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 624f1f7..611f89e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -68,7 +68,7 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Setup pinned development toolchain
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index e28d9df..5b7b43f 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Setup mise
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
diff --git a/.github/workflows/dependency-policy.yml b/.github/workflows/dependency-policy.yml
index c6f6791..1d2d0e2 100644
--- a/.github/workflows/dependency-policy.yml
+++ b/.github/workflows/dependency-policy.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Setup mise
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 4152886..9c24ff2 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -32,7 +32,7 @@ jobs:
       - name: Fetch Book deployment refs
         run: git fetch --force origin main develop --tags
       - name: Setup pinned book toolchain
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
@@ -60,4 +60,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128 # v5.0.0
+        uses: actions/deploy-pages@368f82528645a54fb793d4d04e342629a3f51346 # v5.0.1
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b79653e..457f683 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup pinned release toolchain
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
diff --git a/.github/workflows/scheduled.yml b/.github/workflows/scheduled.yml
index 7f8eb7f..f0bdf0e 100644
--- a/.github/workflows/scheduled.yml
+++ b/.github/workflows/scheduled.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Setup pinned development toolchain
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
@@ -66,7 +66,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Setup mise
-        uses: jdx/mise-action@9e7f7633ff6f6d6048a9418a68d48f288f50eb14 # v4.2.3
+        uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: 2026.7.6
           install: true
diff --git a/.pinto/issued_ids b/.pinto/issued_ids
index 5259cc2..9ff084a 100644
--- a/.pinto/issued_ids
+++ b/.pinto/issued_ids
@@ -74,3 +74,5 @@ P-73
 P-74
 P-75
 P-76
+P-77
+P-78
diff --git a/.pinto/tasks/P-77.md b/.pinto/tasks/P-77.md
new file mode 100644
index 0000000..dd3ef61
--- /dev/null
+++ b/.pinto/tasks/P-77.md
@@ -0,0 +1,30 @@
++++
+id = "P-77"
+title = "Independently configure sprint start and end datetimes"
+status = "done"
+rank = "zy"
+points = 5
+start_at = "2026-09-11T09:38:00.627760Z"
+done_at = "2026-09-11T10:08:31.090702Z"
+created = "2026-09-11T09:32:56.920845Z"
+updated = "2026-09-11T10:08:31.090702Z"
++++
+
+# **Summary**
+
+Allow users to update a Sprint's planned start or end datetime independently through `sprint edit`, preserving the endpoint they did not supply. Keep the existing paired-period invariant for persisted Sprints and keep `sprint new` requiring both endpoints.
+
+# **Implementation Plan**
+
+- Carry independent start/end edit intent from the CLI through the service boundary.
+- Merge a supplied endpoint with the existing counterpart before validating and saving.
+- Add focused domain/service and CLI integration coverage for preservation and rejection paths.
+
+# **Acceptance Criteria**
+
+- [x] Updating only the start datetime changes the start datetime and preserves the existing end datetime.
+- [x] Updating only the end datetime changes the end datetime and preserves the existing start datetime.
+- [x] Updating both the start and end datetimes continues to succeed.
+- [x] Invalid datetime input is rejected.
+- [x] An update where the start datetime is later than the end datetime is rejected.
+- [x] An update with neither datetime supplied preserves the existing behavior.
diff --git a/.pinto/tasks/P-78.md b/.pinto/tasks/P-78.md
new file mode 100644
index 0000000..a729978
--- /dev/null
+++ b/.pinto/tasks/P-78.md
@@ -0,0 +1,69 @@
++++
+id = "P-78"
+title = "Allow independent Sprint Edit schedule endpoints"
+status = "done"
+rank = "zz"
+parent = "P-77"
+start_at = "2026-09-11T09:38:00.892159Z"
+done_at = "2026-09-11T10:05:04.876284Z"
+created = "2026-09-11T09:38:00.432197Z"
+updated = "2026-09-11T10:06:29.100040Z"
++++
+
+# **Summary**
+
+Implement independently configurable start and end datetimes for `sprint edit` without weakening the persisted Sprint paired-period invariant.
+
+# **Planning Estimate**
+
+5 points.
+
+# **Dependencies**
+
+None. Existing datetime parsing, persistence, and paired-period validation are reusable.
+
+# **Owner**
+
+Sprint CLI/service implementation sub-agent.
+
+# **Verification**
+
+Focused checks passed:
+
+- `vfy run --json -- cargo test --all-features --locked --test cli sprint_edit_` — passed (6 tests).
+- `vfy run --json -- cargo test --lib service::sprint::tests::edit_` — passed (4 tests).
+- `vfy run --json -- cargo test --test cli sprint_new_start_` — passed (2 tests).
+- `vfy run --json -- cargo clippy --all-targets -- -D warnings` — passed.
+- `vfy run --json -- cargo fmt --all -- --check` — passed.
+
+The full `mise run check` gate compiled the project and reported 4 failures in pre-existing editor/template integration tests (`add`, `retro`, and `review`); no Sprint endpoint test failed.
+
+Code review found no issues.
+
+# **Completion Conditions**
+
+- Independent `sprint edit --start` and `sprint edit --end` updates preserve the omitted endpoint — passed.
+- Invalid requests do not mutate or persist the Sprint — passed.
+- Existing paired edits and `sprint new` behavior remain valid — passed.
+- Focused tests pass — passed.
+
+# **Decision**
+
+Decision: Apply independent endpoint behavior to `sprint edit`, not `sprint new`.
+Why: The Acceptance Criteria specify updating, while new Sprints have no counterpart to preserve and the persisted model requires a complete period.
+Next verification: Focused CLI and service tests exercise endpoint preservation and reject incomplete or inverted effective periods.
+
+# **Checkpoint**
+
+What differed from the plan: The service schedule intent uses a seven-argument tuple alias to satisfy the repository's clippy argument-count policy while preserving independent endpoints.
+What blocks the next work: Nothing in the selected SBI; the broad gate remains red on four unrelated existing editor/template tests.
+Plan, split, or Flow Mode change: No change; the one-SBI Standard split remains sufficient.
+
+# **Residual Risks and Unverified Items**
+
+- The full project gate is not green because of unrelated existing integration-test failures.
+- Demo data and the repository-wide gate were not added or rerun because the human requested only implementation and tests, not the full Sprint/DoD ceremony.
+
+# **Risks**
+
+The existing commit-failure durability caveat in the service contract is unchanged.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index af53d42..bd7b97e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,16 @@ and releases use [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [0.4.4] - 2026-09-11
+
+This patch release improves Sprint schedule editing without changing the
+persisted paired-period invariant or the existing `sprint new` contract.
+
+### Fixed
+
+- Allowed `sprint edit --start` and `--end` to be updated independently while
+  preserving the endpoint that was not supplied.
+
 ## [0.4.3] - 2026-07-31
 
 This patch release adds Sprint records and strengthens board integrity,
diff --git a/Cargo.lock b/Cargo.lock
index 5158f5e..7f35fb5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,9 +4,9 @@ version = 4
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.4"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+checksum = "c982642fa9e8606056828ee9a8505737230110bb1099153c79efe865c59d12ba"
 dependencies = [
  "memchr",
 ]
@@ -19,9 +19,9 @@ checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
 [[package]]
 name = "android_system_properties"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+checksum = "ae221649c9976a6f6c56ae1facf410f3ddb33cc661c4b7b61020a912d4237fbc"
 dependencies = [
  "libc",
 ]
@@ -171,9 +171,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.13.0"
+version = "2.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4388bee8683e3d04af747c73422af53102d2bd24d9eadb6cbc100baef4b43f8"
+checksum = "3ded4057c258ba199e2d26386d3af3780957ecaee6c4ef4041c6b4b8b97c0b06"
 
 [[package]]
 name = "block-buffer"
@@ -186,9 +186,9 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "1.12.3"
+version = "1.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5cee35f73844aa3014bb606320a6c1f010249dbdf43342fe54b5a4f6a8ed4b79"
+checksum = "6bb31b46c14244e20ee9984b11bf5c992b91fb6939fea616e3512c8baecdbe5f"
 dependencies = [
  "memchr",
  "regex-automata",
@@ -209,15 +209,15 @@ checksum = "64fa3c856b712db6612c019f14756e64e4bcea13337a6b33b696333a9eaa2d06"
 
 [[package]]
 name = "bytemuck"
-version = "1.25.0"
+version = "1.25.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8efb64bd706a16a1bdde310ae86b351e4d21550d98d056f22f8a7f7a2183fec"
+checksum = "95832e849adfb21180ccb6826a99da14e5d266ae5c2e668e1602cf234f153797"
 
 [[package]]
 name = "bytes"
-version = "1.12.0"
+version = "1.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ae3f5d315924270530207e2a68396c3cc547f6dca3fbdca317cfb1a51edb593"
+checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 
 [[package]]
 name = "castaway"
@@ -230,9 +230,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.2.65"
+version = "1.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e228eec9be7c17ccb640b59b36a5cd805ea2a564a4c5e162c2f659fea30d3b96"
+checksum = "005ec2760ca554fae18df7a11195552ec576cd665632a881bc011d5bb2fd4d80"
 dependencies = [
  "find-msvc-tools",
  "shlex",
@@ -246,9 +246,9 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
 [[package]]
 name = "cfg_aliases"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
+checksum = "f079e83a288787bcd14a6aea84cee5c87a67c5a3e660c30f557a3d24761b3527"
 
 [[package]]
 name = "chrono"
@@ -266,9 +266,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.6.4"
+version = "4.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d91e0c145792ef73a6ad36d27c75ac09f1832222a3c209689d90f534685ee5b7"
+checksum = "473c7e07f409a8d772161724aa8db6a765a2532a70f9667eeb7b49d3d02fbdca"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -276,9 +276,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.6.2"
+version = "4.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f09628afdcc538b57f3c6341e9c8e9970f18e4a481690a64974d7023bd33548b"
+checksum = "7b48fea5a88e9ae728a2dcbedbfc0e730f7d60da42e1cb049a83c9fb8b789889"
 dependencies = [
  "anstream",
  "anstyle",
@@ -288,9 +288,9 @@ dependencies = [
 
 [[package]]
 name = "clap_complete"
-version = "4.6.8"
+version = "4.6.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f84a88507dbd05c695f2cb5e8558e747179134005e9893882dec964190ed89"
+checksum = "3be2ad0423bdbbb0e25bc89add796f3559706d4a95e1bc98e4d9662a957b6a19"
 dependencies = [
  "clap",
 ]
@@ -304,7 +304,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 3.0.3",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -383,9 +383,9 @@ checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
 
 [[package]]
 name = "crokey"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04a63daf06a168535c74ab97cdba3ed4fa5d4f32cb36e437dcceb83d66854b7c"
+checksum = "074bc31bff1084f74e5a145ad5f6ac74469fa312159faa5144f0b1c4506b8d80"
 dependencies = [
  "crokey-proc_macros",
  "crossterm",
@@ -396,22 +396,22 @@ dependencies = [
 
 [[package]]
 name = "crokey-proc_macros"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "847f11a14855fc490bd5d059821895c53e77eeb3c2b73ee3dded7ce77c93b231"
+checksum = "b88c4ff2d5717616c3bb4a31d06b0b241ed811c7c0c41d077d77631bee7caad0"
 dependencies = [
  "crossterm",
  "proc-macro2",
  "quote",
  "strict",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
 name = "crossbeam"
-version = "0.8.4"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1137cd7e7fc0fb5d3c5a8678be38ec56e819125d8d7907411fe24ccb943faca8"
+checksum = "e71406cd8807725f7ac2f999a4cdd32e98f829fdf65f528343cebf945e41df1e"
 dependencies = [
  "crossbeam-channel",
  "crossbeam-deque",
@@ -422,18 +422,18 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.16"
+version = "0.5.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d85363c37faeca707aef026efa9f3b34d077bce547e48f770770625c6013679e"
+checksum = "98b0cc327b5bc766e7fda9c9260cc0fa81b43a8e240440422dff70788e3f9ef1"
 dependencies = [
  "crossbeam-utils",
 ]
 
 [[package]]
 name = "crossbeam-deque"
-version = "0.8.6"
+version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9dd111b7b7f7d55b72c0a6ae361660ee5853c9af73f70c3c2ef6858b950e2e51"
+checksum = "622f3fc73690be383c7214310406f28a90e6edeadc3cea882f9d71e495b9711a"
 dependencies = [
  "crossbeam-epoch",
  "crossbeam-utils",
@@ -441,27 +441,27 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-epoch"
-version = "0.9.20"
+version = "0.9.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d6914041f254d6e9176c01941b21115dcfb7089e55135a35411081bd106ef3f"
+checksum = "dc74980687109a3b14c72fd458107bf0baa1da1a1a805e178d15501ba9b86d9d"
 dependencies = [
  "crossbeam-utils",
 ]
 
 [[package]]
 name = "crossbeam-queue"
-version = "0.3.13"
+version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "803d13fb3b09d88be9f4dbc29062c66b19bf7170867ceb746d2a8689bf6c7a26"
+checksum = "03e8bd762f7479489c70ed6c768ddca99d7296857de437a68dcb2a94365b3fae"
 dependencies = [
  "crossbeam-utils",
 ]
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.21"
+version = "0.8.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
+checksum = "a31eee39dddec8330830986fcd7625edb5a24ec90ea038215273bbc3adb08ac6"
 
 [[package]]
 name = "crossterm"
@@ -469,7 +469,7 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8b9f2e4c67f833b660cdb0a3523065869fb35570177239812ed4c905aeff87b"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "crossterm_winapi",
  "derive_more",
  "document-features",
@@ -512,9 +512,9 @@ dependencies = [
 
 [[package]]
 name = "darling"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25ae13da2f202d56bd7f91c25fba009e7717a1e4a1cc98a76d844b65ae912e9d"
+checksum = "ed17f5901b6630b993ca003def43f2f8ef4014fc13b047b57aad617ff32bc2ec"
 dependencies = [
  "darling_core",
  "darling_macro",
@@ -522,26 +522,26 @@ dependencies = [
 
 [[package]]
 name = "darling_core"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9865a50f7c335f53564bb694ef660825eb8610e0a53d3e11bf1b0d3df31e03b0"
+checksum = "6837e2cf7485aaae18f86181d2f0e9a7ed297a025e220aeabf63fdebd3a2ddff"
 dependencies = [
  "ident_case",
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.118",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "darling_macro"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3984ec7bd6cfa798e62b4a642426a5be0e68f9401cfc2a01e3fa9ea2fcdb8d"
+checksum = "2ac7135c3ef02b2f7833bbeb1be5ba7f966dcde8a87c6b87f65a778d71a02785"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.118",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -575,7 +575,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustc_version",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -596,13 +596,13 @@ dependencies = [
 
 [[package]]
 name = "displaydoc"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ac70aa55017e108007fbaf5aa0f54b021c98f92ff8af59d42eda9da96e3dd4f"
+checksum = "c6232dd377dcc64799954cbd3a9bb882e9cdc1308ccd87b1c098f1fb2eaf82a8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -616,9 +616,9 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.16.0"
+version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91622ff5e7162018101f2fea40d6ebf4a78bbe5a49736a2020649edf9693679e"
+checksum = "252afb9ae5eaa683babdc6a068b3f5726eb19e05070c731f9b2a23a7c3e8ed34"
 
 [[package]]
 name = "endian-type"
@@ -644,9 +644,9 @@ dependencies = [
 
 [[package]]
 name = "error-code"
-version = "3.3.2"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dea2df4cf52843e0452895c455a1a2cfbb842a1e7329671acf418fdc53ed4c59"
+checksum = "0b5343afd4a8365a643ac588dab4cf234a190c7f6c88c9f6dd6ffe00837661b7"
 
 [[package]]
 name = "euclid"
@@ -679,17 +679,11 @@ dependencies = [
  "regex",
 ]
 
-[[package]]
-name = "fast-srgb8"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd2e7510819d6fbf51a5545c8f922716ecfb14df168a3242f7d33e0239efe6a1"
-
 [[package]]
 name = "fastrand"
-version = "2.4.1"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
+checksum = "da7c62ceae207dd37ea5b845da6a0696c799f85e97da1ab5b7910be3c1c80223"
 
 [[package]]
 name = "filedescriptor"
@@ -704,9 +698,9 @@ dependencies = [
 
 [[package]]
 name = "find-msvc-tools"
-version = "0.1.9"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
+checksum = "3e0f1c7c3a72c66fd80abe965175f7523475c0489a87d3ff9d6e8c87d87a9d2d"
 
 [[package]]
 name = "finl_unicode"
@@ -761,7 +755,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "54f0d287c53ffd184d04d8677f590f4ac5379785529e5e08b1c8083acdd5c198"
 dependencies = [
  "memchr",
- "thiserror 2.0.19",
+ "thiserror 2.0.20",
 ]
 
 [[package]]
@@ -789,21 +783,21 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.32"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e3450815272ef58cec6d564423f6e755e25379b217b0bc688e295ba24df6b1d"
+checksum = "92d699e522242e69e3003b94ecc1f960f3a5e015aa7c5d7486e65ad01dd94f5e"
 
 [[package]]
 name = "futures-task"
-version = "0.3.32"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "037711b3d59c33004d3856fbdc83b99d4ff37a24768fa1be9ce3538a1cde4393"
+checksum = "cd417de3d1d015fc3bfd2b1ea46dfc7bab72ef86f1cc7cc9c78e728b34a6d1fd"
 
 [[package]]
 name = "futures-util"
-version = "0.3.32"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "389ca41296e6190b48053de0321d02a77f32f8a5d2461dd38762c0593805c6d6"
+checksum = "0d50a92467f8ba5dd6e3ee5d4bd04d73ab2e4e1c44474a0674821dfce14b79bc"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -868,11 +862,11 @@ dependencies = [
 
 [[package]]
 name = "hashlink"
-version = "0.11.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "824e001ac4f3012dd16a264bec811403a67ca9deb6c102fc5049b32c4574b35f"
+checksum = "a596f1b20ed2cc5ecac41a164aaebc7258057060f06c0cf7a2ba3991ee7990fb"
 dependencies = [
- "hashbrown 0.16.1",
+ "hashbrown 0.17.1",
 ]
 
 [[package]]
@@ -928,9 +922,9 @@ checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
 [[package]]
 name = "indexmap"
-version = "2.14.0"
+version = "2.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d466e9454f08e4a911e14806c24e16fba1b4c121d1ea474396f396069cf949d9"
+checksum = "cc4e190f5d26ca7051642629da2c52fc03bde85a03197c99408dcd291734c855"
 dependencies = [
  "equivalent",
  "hashbrown 0.17.1",
@@ -947,15 +941,15 @@ dependencies = [
 
 [[package]]
 name = "instability"
-version = "0.3.12"
+version = "0.3.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5eb2d60ef19920a3a9193c3e371f726ec1dafc045dac788d0fb3704272458971"
+checksum = "2bf84e73fa6f27f299dec58e13223cf70db80da872eb921d4f6138342a0eabc8"
 dependencies = [
  "darling",
  "indoc",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -1000,9 +994,9 @@ checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
 [[package]]
 name = "js-sys"
-version = "0.3.103"
+version = "0.3.105"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53b44bfcdb3f8d5837a46dae1ca9660a837176eee74a28b229bc626816589102"
+checksum = "ce57d20d1ea864ce2ac172ab472d409214f4fd359f0b2a2775abdf522e2af99e"
 dependencies = [
  "cfg-if",
  "futures-util",
@@ -1017,7 +1011,7 @@ checksum = "bde5057d6143cc94e861d90f591b9303d6716c6b9602309150bd068853c10899"
 dependencies = [
  "hashbrown 0.16.1",
  "portable-atomic",
- "thiserror 2.0.19",
+ "thiserror 2.0.20",
 ]
 
 [[package]]
@@ -1028,9 +1022,9 @@ checksum = "bf36173d4167ed999940f804952e6b08197cae5ad5d572eb4db150ce8ad5d58f"
 
 [[package]]
 name = "lazy-regex"
-version = "3.6.0"
+version = "3.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6bae91019476d3ec7147de9aa291cadb6d870abf2f3015d2da73a90325ac1496"
+checksum = "4994ba703f78b083e2f7946dac9251abd83fd43a0365f030e99b69be5b4b9ef9"
 dependencies = [
  "lazy-regex-proc_macros",
  "once_cell",
@@ -1039,14 +1033,14 @@ dependencies = [
 
 [[package]]
 name = "lazy-regex-proc_macros"
-version = "3.6.0"
+version = "3.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4de9c1e1439d8b7b3061b2d209809f447ca33241733d9a3c01eabf2dc8d94358"
+checksum = "fd97232314824e6dbef1918a871bb93f51070455e3715bf26e19a6d01aa977a0"
 dependencies = [
  "proc-macro2",
  "quote",
  "regex",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1069,9 +1063,9 @@ checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
 
 [[package]]
 name = "libsqlite3-sys"
-version = "0.37.0"
+version = "0.38.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f111c8c41e7c61a49cd34e44c7619462967221a6443b0ec299e0ac30cfb9b1"
+checksum = "f1d20bef17f513b9b3004532233187769cd072d790971f4e4da0e346eb6401e8"
 dependencies = [
  "cc",
  "pkg-config",
@@ -1080,11 +1074,11 @@ dependencies = [
 
 [[package]]
 name = "line-clipping"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f50e8f47623268b5407192d26876c4d7f89d686ca130fdc53bced4814cd29f8"
+checksum = "e752191d037c44ad111a8caa762921926658402f01cc1253f7bef2020ece4f5e"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
 ]
 
 [[package]]
@@ -1110,15 +1104,15 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.33"
+version = "0.4.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ceec5bc11778974d1bcb055b18002eba7f4b3518b6a0081b3af5f21666da9ad"
+checksum = "f9f8bd3e56ce4dfc153cf470fffbfa98c7620958b312ca5c3a4b8d5181fd13c6"
 
 [[package]]
 name = "lru"
-version = "0.18.0"
+version = "0.18.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a860605968fce16869fd239cf4237a82f3ac470723415db603b0e8b6c8d4fb9"
+checksum = "ff9840bcc50b71349309900da0ce7279aa336ae71d73250b07998932c7d97c25"
 dependencies = [
  "hashbrown 0.17.1",
 ]
@@ -1135,9 +1129,9 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.8.2"
+version = "2.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88904434abc2901f197fe8cc55f0445e7ded921dba5911dad2e2b39b48e663c4"
+checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "memmem"
@@ -1171,9 +1165,9 @@ checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
 [[package]]
 name = "mio"
-version = "1.2.1"
+version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02bd0af71c67b473010cbbc60715ee815645a4dc942899111f494b4b737d6fda"
+checksum = "4b18443e9c262bfe8fa82f51666e2642c53393f7e5c27b3e1aeab922cff5b9d8"
 dependencies = [
  "libc",
  "log",
@@ -1196,7 +1190,7 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "cfg-if",
  "cfg_aliases",
  "libc",
@@ -1209,7 +1203,7 @@ version = "0.31.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf20d2fde8ff38632c426f1165ed7436270b44f199fc55284c38276f9db47c3d"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "cfg-if",
  "cfg_aliases",
  "libc",
@@ -1245,7 +1239,7 @@ checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1289,26 +1283,35 @@ dependencies = [
 
 [[package]]
 name = "palette"
-version = "0.7.6"
+version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4cbf71184cc5ecc2e4e1baccdb21026c20e5fc3dcf63028a086131b3ab00b6e6"
+checksum = "ddeed8580d347d2abf3dcf06a5f0b3dc020258338526b277847cd4248a70fc64"
 dependencies = [
  "approx",
- "fast-srgb8",
  "libm",
  "palette_derive",
+ "palette_math",
 ]
 
 [[package]]
 name = "palette_derive"
-version = "0.7.6"
+version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5030daf005bface118c096f510ffb781fc28f9ab6a32ab224d8631be6851d30"
+checksum = "88537020289b719d81be994ccf1bbf4990f477e2f69ee52fe3e45f43a02e56be"
 dependencies = [
  "by_address",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "palette_math"
+version = "0.7.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e6eb142958d64335fb0e345c5b9ead2ecd6fc438c307e9d7d3c4fd428dbaf12"
+dependencies = [
+ "libm",
 ]
 
 [[package]]
@@ -1336,9 +1339,9 @@ dependencies = [
 
 [[package]]
 name = "pest"
-version = "2.8.7"
+version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47627dd7305c6a2d6c8c6bcd24c5a4c17dbbf425f4f9c5313e724b38fc9782e9"
+checksum = "6d45aeb61b4bf818e12d4205f2466f8c4748f85f4fce0146d1c03d69d753f0ad"
 dependencies = [
  "memchr",
  "ucd-trie",
@@ -1346,9 +1349,9 @@ dependencies = [
 
 [[package]]
 name = "pest_derive"
-version = "2.8.7"
+version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b4254325ecad416ab689e27ba51da03ba01a9632bc6e108f5fe7c3c4ad29d58"
+checksum = "89cc5a242e25ed4e7704d0be240f2cfbe20a8c27e7e252d94835be93d92dc39f"
 dependencies = [
  "pest",
  "pest_generator",
@@ -1356,22 +1359,22 @@ dependencies = [
 
 [[package]]
 name = "pest_generator"
-version = "2.8.7"
+version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c4c0e91ead7a8f7acecbca6f003fc2e8282b1dbe2dd9c9d2f16aba42995e0a7"
+checksum = "7abf21475cc3820fe4b2ca2dc2142902f67a02189f3b5b3a229f4febc01a43e5"
 dependencies = [
  "pest",
  "pest_meta",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
 name = "pest_meta"
-version = "2.8.7"
+version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9744bc48116fee06334924bb5f2bad41eed5e89bd26e29b0b799f9a3f82c210"
+checksum = "adba4db388f687393c18c51348d44a41d870ca9df71a2c98172ea3035dc6936e"
 dependencies = [
  "pest",
 ]
@@ -1403,7 +1406,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
 dependencies = [
  "phf_shared",
- "rand 0.8.6",
+ "rand 0.8.8",
 ]
 
 [[package]]
@@ -1416,7 +1419,7 @@ dependencies = [
  "phf_shared",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1436,7 +1439,7 @@ checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
 
 [[package]]
 name = "pinto-cli"
-version = "0.4.3"
+version = "0.4.4"
 dependencies = [
  "anyhow",
  "assert_cmd",
@@ -1458,7 +1461,7 @@ dependencies = [
  "tempfile",
  "termimad",
  "terminal_size",
- "thiserror 2.0.19",
+ "thiserror 2.0.20",
  "tokio",
  "toml",
  "unic-langid",
@@ -1469,15 +1472,15 @@ dependencies = [
 
 [[package]]
 name = "pkg-config"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19f132c84eca552bf34cab8ec81f1c1dcc229b811638f9d283dceabe58c5569e"
+checksum = "f6b464fbc74e149a392436b17d523f769e057cb6877f6a5c4618bc6f11800548"
 
 [[package]]
 name = "portable-atomic"
-version = "1.13.1"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c33a9471896f1c69cecef8d20cbe2f7accd12527ce60845ff44c153bb2a21b49"
+checksum = "05c8b63e8d9609db387f0324918f81d68fe27748f084ef092fb35954d0539a85"
 
 [[package]]
 name = "powerfmt"
@@ -1526,9 +1529,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.106"
+version = "1.0.107"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
+checksum = "985e7ec9bb745e6ce6535b544d84d6cd6f7ad8bd711c398938ae983b91a766d9"
 dependencies = [
  "unicode-ident",
 ]
@@ -1541,9 +1544,9 @@ checksum = "4b45fcc2344c680f5025fe57779faef368840d0bd1f42f216291f0dc4ace4744"
 dependencies = [
  "bit-set 0.8.0",
  "bit-vec 0.8.0",
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "num-traits",
- "rand 0.9.4",
+ "rand 0.9.5",
  "rand_chacha",
  "rand_xorshift",
  "regex-syntax",
@@ -1560,9 +1563,9 @@ checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 
 [[package]]
 name = "quote"
-version = "1.0.46"
+version = "1.0.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfbc457d0c7a0759a614551b11a6409e5951f6c7537be1f1b7682b9ae9230368"
+checksum = "1fbf4db142a473a8d80c26bbf18454ed458bf8d26c8219c331daecfdbd079001"
 dependencies = [
  "proc-macro2",
 ]
@@ -1591,18 +1594,18 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.8.6"
+version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ca0ecfa931c29007047d1bc58e623ab12e5590e8c7cc53200d5202b69266d8a"
+checksum = "e058c7de0b26af77780c769414d6257830bb240f3c38477dbc2c16e5f54d6d4c"
 dependencies = [
  "rand_core 0.6.4",
 ]
 
 [[package]]
 name = "rand"
-version = "0.9.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea"
+checksum = "b9ef1d0d795eb7d84685bca4f72f3649f064e6641543d3a8c415898726a57b41"
 dependencies = [
  "rand_chacha",
  "rand_core 0.9.5",
@@ -1664,7 +1667,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cbb175c433c8e28a809d1f5773a2ae96e68c0ce40db865cbab1020bf33ae479c"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "compact_str",
  "critical-section",
  "hashbrown 0.17.1",
@@ -1674,7 +1677,7 @@ dependencies = [
  "palette",
  "serde",
  "strum",
- "thiserror 2.0.19",
+ "thiserror 2.0.20",
  "unicode-segmentation",
  "unicode-truncate",
  "unicode-width 0.2.2",
@@ -1729,7 +1732,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "66e3d19bcc9130ca376277d93b60767ff121ace3be06f5f95f81dd68956407d1"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "hashbrown 0.17.1",
  "indoc",
  "instability",
@@ -1769,7 +1772,7 @@ version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
 ]
 
 [[package]]
@@ -1786,9 +1789,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.16"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fcfdb36bda0c880c5931cdc7a2bcdc8ba4556847b9d912bca70bc94708711ad"
+checksum = "ad8553b9b26413251cbf30e620595c7a41b3887f03da04579c0e6b0d6a06b4b2"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1808,16 +1811,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c51c9ae4df8a7fba42103df5c621fa3c37eccf3a3c650879e90fc48b11cc192c"
 dependencies = [
  "hashbrown 0.16.1",
- "thiserror 2.0.19",
+ "thiserror 2.0.20",
 ]
 
 [[package]]
 name = "rusqlite"
-version = "0.39.0"
+version = "0.40.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a0d2b0146dd9661bf67bb107c0bb2a55064d556eeb3fc314151b957f313bcd4e"
+checksum = "23f2a97da3e3873c73cb2a2e71b35c40ff95e0b1eefa8d72d8499a6928c3b5b3"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "fallible-iterator",
  "fallible-streaming-iterator",
  "hashlink",
@@ -1847,7 +1850,7 @@ version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "errno",
  "libc",
  "linux-raw-sys",
@@ -1856,9 +1859,9 @@ dependencies = [
 
 [[package]]
 name = "rustversion"
-version = "1.0.22"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
+checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f"
 
 [[package]]
 name = "rusty-fork"
@@ -1878,7 +1881,7 @@ version = "18.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53f6a737db68eb1a8ccff86b584b2fc13eca6a7bb6f78ebc7c529547e3ab9684"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "cfg-if",
  "clipboard-win",
  "home",
@@ -1907,9 +1910,9 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "self_cell"
-version = "1.2.2"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b12e76d157a900eb52e81bc6e9f3069344290341720e9178cde2407113ac8d89"
+checksum = "2ab42ca02749e120097e328d91d415325bdf43b1c72c4c8badf37375fe40a813"
 
 [[package]]
 name = "semver"
@@ -1944,7 +1947,7 @@ checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.3",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -2031,9 +2034,9 @@ checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5"
 
 [[package]]
 name = "smallvec"
-version = "1.15.2"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
+checksum = "b9be42f50aa861c555654aa3a37f52f4b1074bacf4e48fe0ef7fa584e80f1f0f"
 
 [[package]]
 name = "sqlite-wasm-rs"
@@ -2083,7 +2086,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -2099,9 +2102,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.118"
+version = "2.0.119"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b9ae57f904213ebb649ce6895b8a66c66f0203b9319718f69a5612a065b1422"
+checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2110,9 +2113,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "3.0.3"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53e9bae58849f64dfa4f5d5ae372c8341f7305f82a3868709269343628b659a3"
+checksum = "12df2e0110f65b775f769bb17ef989067a1d931b2eb822bd4346631eeada89f9"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2134,9 +2137,9 @@ dependencies = [
 
 [[package]]
 name = "termimad"
-version = "0.35.1"
+version = "0.35.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d53d4b1294b87e81925b7ae7f8f4d000376e3a5b3349d978429665428a793fcb"
+checksum = "2374179aac8b77011a1aefe2f44d0c34eb680c9b4bd1c369a88991262c60c85a"
 dependencies = [
  "coolor",
  "crokey",
@@ -2144,7 +2147,7 @@ dependencies = [
  "lazy-regex",
  "minimad",
  "serde",
- "thiserror 2.0.19",
+ "thiserror 2.0.20",
  "unicode-width 0.1.14",
 ]
 
@@ -2154,7 +2157,7 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9048a889effe34a5cddee0af7f53285198b16dca3be510858d38dfdb3e62a04e"
 dependencies = [
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "parking_lot",
  "rustix",
  "signal-hook",
@@ -2206,7 +2209,7 @@ checksum = "4676b37242ccbd1aabf56edb093a4827dc49086c0ffd764a5705899e0f35f8f7"
 dependencies = [
  "anyhow",
  "base64",
- "bitflags 2.13.0",
+ "bitflags 2.13.2",
  "fancy-regex",
  "filedescriptor",
  "finl_unicode",
@@ -2251,11 +2254,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.19"
+version = "2.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09a43598840e33d5b0331f38c5e30d13bb11c11210a4b58f0d9b18a5a5eefcd9"
+checksum = "ec86235f5fcc2a73650310756d2ac5b138a5780bbbdfae3eeccec992c435ba4f"
 dependencies = [
- "thiserror-impl 2.0.19",
+ "thiserror-impl 2.0.20",
 ]
 
 [[package]]
@@ -2266,25 +2269,25 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.19"
+version = "2.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43cbfe0cf76104d42a574802844187e84a305e531ed54455f11fbde0f10541cd"
+checksum = "bc04cd3e1236dd4a98afca4569f2deb3f120e5422a4023be2cb683f8486292af"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.3",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "time"
-version = "0.3.53"
+version = "0.3.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18dfaaeddcb932337b5e7866ee7d0ce9b76d2fd092997146f187ec09b4558a50"
+checksum = "cdb87b95ec50ddfa440816d227a17b2ccbdda963a316a727fda0fc4334f7d134"
 dependencies = [
  "deranged",
  "libc",
@@ -2303,9 +2306,9 @@ checksum = "9e1c906769ad99c88eaa54e728060edef082f8e358ff32030cb7c7d315e81109"
 
 [[package]]
 name = "tinystr"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8323304221c2a851516f22236c5722a72eaa19749016521d6dff0824447d96d"
+checksum = "b1e27c91459209c2986af3dcf603a5a74a4368754ce37414f59acc971167f643"
 dependencies = [
  "displaydoc",
  "serde_core",
@@ -2329,20 +2332,20 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "2.7.0"
+version = "2.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "385a6cb71ab9ab790c5fe8d67f1645e6c450a7ce006a33de03daa956cf70a496"
+checksum = "78773a2a397f451582ce068015985c33193cf6dea8b74d2a639fe457b2f07b0e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "toml"
-version = "1.1.3+spec-1.1.0"
+version = "1.1.6+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53c96ecdfa941c8fc4fcaed14f99ada8ebed502eef533015095a07e3301d4c3c"
+checksum = "920602543f0911ab71da12c50d59701da54c196d1a2bf5cb4b75667f137a406a"
 dependencies = [
  "indexmap",
  "serde_core",
@@ -2364,9 +2367,9 @@ dependencies = [
 
 [[package]]
 name = "toml_parser"
-version = "1.1.2+spec-1.1.0"
+version = "1.1.3+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2abe9b86193656635d2411dc43050282ca48aa31c2451210f4202550afb7526"
+checksum = "1d38ac1cf9b95face32296c0a3ede1fdc270627c9d9c02a7274dd6d960dc4d56"
 dependencies = [
  "winnow",
 ]
@@ -2465,9 +2468,9 @@ checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
 [[package]]
 name = "uuid"
-version = "1.23.4"
+version = "1.26.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf80a72845275afea99e7f2b434723d3bc7e38470fcd1c7ed39a599c73319a53"
+checksum = "2ef6dac1e96601b4fb3acccccff2139741fcb757cb9a36089bf5be91cfb285ce"
 dependencies = [
  "atomic",
  "getrandom 0.4.3",
@@ -2522,9 +2525,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b067c0c11094aef6b7a801c1e34a26affafdf3d051dba08456b868789aaf9a4"
+checksum = "aecb87a33d3b0c5e3b7aa46336eaf486cffafbd281b195e4c8b80d50df2351bf"
 dependencies = [
  "cfg-if",
  "once_cell",
@@ -2535,9 +2538,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "167ce5e579f6bcf889c4f7175a8a5a585de84e8ff93976ce393efa5f2837aab1"
+checksum = "a690d511e3c1a8b3a55e33511e3c2c00c78415cd23650f32b808627f5696b9ed"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -2545,22 +2548,22 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3997c7839262f4ef12cf90b818d6340c18e80f263f1a94bf157d0ec4420380e"
+checksum = "411e4887f0071ef2d2164a9d5fdf2d20efbef78fccd3a78b0c10a1dc5295e48a"
 dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 3.0.5",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc1b4cb0cc549fcf58d7dfc081778139b3d283a081644e833e84682ad71cea24"
+checksum = "81941cd78d0c92026c33e5e01312845a4cb1e9af3407f9134b100dd03144103e"
 dependencies = [
  "unicode-ident",
 ]
@@ -2680,7 +2683,7 @@ checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -2691,7 +2694,7 @@ checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -2729,9 +2732,9 @@ dependencies = [
 
 [[package]]
 name = "winnow"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0592e1c9d151f854e6fd382574c3a0855250e1d9b2f99d9281c6e6391af352f1"
+checksum = "23b97319f7b8343df12cc98938e5c3eb436064524c8d2b4e30a1d3a36eecdf81"
 
 [[package]]
 name = "wit-bindgen"
@@ -2741,9 +2744,9 @@ checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
 
 [[package]]
 name = "yaml-rust2"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "631a50d867fafb7093e709d75aaee9e0e0d5deb934021fcea25ac2fe09edc51e"
+checksum = "c6edb26322e610d4f04b7cd34478317685d24d0999437e551fb97c5441151041"
 dependencies = [
  "arraydeque",
  "hashlink",
@@ -2751,22 +2754,22 @@ dependencies = [
 
 [[package]]
 name = "zerocopy"
-version = "0.8.54"
+version = "0.8.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7cbbc0a705a0fd05cc3676525980d2bf5a9bc4adac6d6475209a7887cf59d19"
+checksum = "d35102a9f36d089ccae9e4c6802bc118be4487b80aaffc0ab4e0cf5ce92d2873"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.8.54"
+version = "0.8.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2e817b7b52d0c7358d3246da9d69935ebb18116b2b102b4230dac079b4862f5"
+checksum = "146c01f5ab44258da43cf276c74a2763db2ff3969c9c652c3f2de07041d0b2bc"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.118",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -2777,9 +2780,9 @@ checksum = "0ec05a11813ea801ff6d75110ad09cd0824ddba17dfe17128ea0d5f68e6c5272"
 
 [[package]]
 name = "zerovec"
-version = "0.11.6"
+version = "0.11.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90f911cbc359ab6af17377d242225f4d75119aec87ea711a880987b18cd7b239"
+checksum = "bb0464e17806c1d976d5cba29399c7f08e516e279e2ba493f63123b5fca67dd8"
 dependencies = [
  "serde",
  "zerofrom",
@@ -2787,6 +2790,6 @@ dependencies = [
 
 [[package]]
 name = "zmij"
-version = "1.0.21"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
+checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"
diff --git a/Cargo.toml b/Cargo.toml
index 81757ce..9e38392 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pinto-cli"
-version = "0.4.3"
+version = "0.4.4"
 edition = "2024"
 rust-version = "1.89"
 description = "A lightweight, local-first, Git-friendly Scrum backlog and Kanban board for the CLI and TUI"
@@ -46,7 +46,7 @@ rustyline = "18.0.1"
 # system-library dependency; it remains outside the default build. Keep the
 # 0.39 series while Rust 1.89 is the MSRV: 0.40 pulls a build script that uses
 # the unstable `cfg_select` macro.
-rusqlite = { version = "0.39.0", features = ["bundled"], optional = true }
+rusqlite = { version = "0.40.2", features = ["bundled"], optional = true }
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.145"
 # Small crate used only to obtain terminal width (Unix reuses transitive rustix).
@@ -95,4 +95,4 @@ proptest = "1.9.0"
 # the archived `serde_yaml`. `default-features = false` drops the `encoding`
 # feature (and its `encoding_rs` dependency): the checks parse UTF-8 `&str`
 # inputs, so charset detection is unnecessary. See docs/dependencies.md.
-yaml-rust2 = { version = "0.11.0", default-features = false }
+yaml-rust2 = { version = "0.12.0", default-features = false }
diff --git a/README.md b/README.md
index c3e13a0..87d3a5d 100644
--- a/README.md
+++ b/README.md
@@ -19,10 +19,10 @@ plain text so that every change is easy to inspect and recover with Git.
 
 ## Installation
 
-The latest published release is `0.4.3`. Install it from crates.io:
+The latest published release is `0.4.4`. Install it from crates.io:
 
 ```bash
-cargo install pinto-cli --version 0.4.3
+cargo install pinto-cli --version 0.4.4
 pinto --version
 ```
 
diff --git a/deny.toml b/deny.toml
index feee8a8..f43ee61 100644
--- a/deny.toml
+++ b/deny.toml
@@ -26,7 +26,7 @@ wildcards = "deny"
 highlight = "all"
 skip = [
     { crate = "hashbrown@0.16.1", reason = "Transitive: older release still pulled alongside hashbrown 0.17." },
-    { crate = "syn@2.0.118", reason = "Transitive proc-macro dependencies still require syn 2; updated clap, serde, and thiserror use syn 3." },
+    { crate = "syn@2.0.119", reason = "Transitive proc-macro dependencies still require syn 2; updated clap, serde, and thiserror use syn 3." },
     { crate = "unicode-width@0.1.14", reason = "Transitive: older release still pulled alongside unicode-width 0.2." },
 ]
 
diff --git a/docs/book/src/installation.md b/docs/book/src/installation.md
index 24fcb0b..347d5db 100644
--- a/docs/book/src/installation.md
+++ b/docs/book/src/installation.md
@@ -2,10 +2,10 @@
 
 ## Using a released package
 
-Install the latest published 0.4.3 binary with Cargo:
+Install the latest published 0.4.4 binary with Cargo:
 
 ```bash
-cargo install pinto-cli --version 0.4.3
+cargo install pinto-cli --version 0.4.4
 pinto --version
 ```
 
diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
index 0eb774e..cc81d8c 100644
--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -1364,7 +1364,7 @@ checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
 
 [[package]]
 name = "pinto-cli"
-version = "0.4.3"
+version = "0.4.4"
 dependencies = [
  "anyhow",
  "chrono",
diff --git a/scripts/verify-package.sh b/scripts/verify-package.sh
index bae3831..28641ec 100755
--- a/scripts/verify-package.sh
+++ b/scripts/verify-package.sh
@@ -43,10 +43,17 @@ if [ "$missing_source" -ne 0 ]; then
     exit 1
 fi
 
+target_dir=$(cargo metadata --no-deps --format-version 1 |
+    sed -n 's/.*"target_directory":"\([^"]*\)".*/\1/p')
+if [ -z "$target_dir" ]; then
+    echo "could not determine Cargo target directory" >&2
+    exit 1
+fi
+
 package_marker="$temporary_dir/package-start"
 touch "$package_marker"
 package
-package_file=$(find "$root/target/package" -maxdepth 1 -type f -name 'pinto-cli-*.crate' -newer "$package_marker" -print | sort | tail -n 1)
+package_file=$(find "$target_dir/package" -maxdepth 1 -type f -name 'pinto-cli-*.crate' -newer "$package_marker" -print | sort | tail -n 1)
 if [ -z "$package_file" ]; then
     echo "cargo package did not produce a .crate archive" >&2
     exit 1
diff --git a/src/cli/args.rs b/src/cli/args.rs
index db0cd3c..8927061 100644
--- a/src/cli/args.rs
+++ b/src/cli/args.rs
@@ -519,10 +519,12 @@ pub(super) enum SprintCommand {
         )]
         clear_goal_achieved: bool,
         /// Replacement planned start date and time (`YYYY-MM-DD` or `YYYY-MM-DDTHH:MM`, in UTC).
-        #[arg(long, short = 's', requires = "end", value_parser = parse_utc_datetime)]
+        /// When supplied alone, preserves the existing end date.
+        #[arg(long, short = 's', value_parser = parse_utc_datetime)]
         start: Option<chrono::DateTime<chrono::Utc>>,
         /// Replacement planned end date and time (`YYYY-MM-DD` or `YYYY-MM-DDTHH:MM`, in UTC).
-        #[arg(long, short = 'e', requires = "start", value_parser = parse_utc_datetime)]
+        /// When supplied alone, preserves the existing start date.
+        #[arg(long, short = 'e', value_parser = parse_utc_datetime)]
         end: Option<chrono::DateTime<chrono::Utc>>,
     },
     /// Remove a sprint and release any assigned PBIs back to the backlog.
diff --git a/src/cli/commands/sprint.rs b/src/cli/commands/sprint.rs
index 24ca0c1..113f2ee 100644
--- a/src/cli/commands/sprint.rs
+++ b/src/cli/commands/sprint.rs
@@ -384,10 +384,7 @@ pub(super) async fn cmd_sprint_with_localizer(
             end,
         } => {
             let id: SprintId = id.parse()?;
-            let period = match (start, end) {
-                (Some(start), Some(end)) => Some((start, end)),
-                _ => None,
-            };
+            let period = (start.is_some() || end.is_some()).then_some((start, end));
             let sprint = edit_sprint(
                 &dir,
                 &id,
diff --git a/src/service/sprint/lifecycle.rs b/src/service/sprint/lifecycle.rs
index 2bf927b..d12b1d9 100644
--- a/src/service/sprint/lifecycle.rs
+++ b/src/service/sprint/lifecycle.rs
@@ -13,6 +13,8 @@ use std::path::Path;
 
 use super::SprintDeletionOptions;
 
+type SprintEditPeriod = (Option<DateTime<Utc>>, Option<DateTime<Utc>>);
+
 /// Create a sprint on the board in `project_dir` and return the saved [`Sprint`].
 ///
 /// The state is [`crate::sprint::SprintState::Planned`]. `goal` is persisted after the frontmatter
@@ -69,9 +71,11 @@ pub async fn create_sprint(
 
 /// Update the title, goal, and/or planned period of an existing sprint.
 ///
-/// Fields set to `None` remain unchanged. Return [`Error::NothingToUpdate`] when no field is
-/// supplied, [`Error::EmptySprintTitle`] for a blank title, [`Error::InvalidSprintPeriod`] for an
-/// inverted period, or [`Error::SprintNotFound`] when the sprint does not exist.
+/// Fields set to `None` remain unchanged. Supplying only one schedule endpoint preserves the
+/// existing counterpart. Return [`Error::NothingToUpdate`] when no field is supplied,
+/// [`Error::EmptySprintTitle`] for a blank title, [`Error::SprintPeriodIncomplete`] when the
+/// effective schedule has only one endpoint, [`Error::InvalidSprintPeriod`] for an inverted period,
+/// or [`Error::SprintNotFound`] when the sprint does not exist.
 ///
 /// # Errors
 ///
@@ -83,14 +87,23 @@ pub async fn edit_sprint(
     id: &SprintId,
     title: Option<String>,
     goal: Option<String>,
-    period: Option<(DateTime<Utc>, DateTime<Utc>)>,
+    period: Option<SprintEditPeriod>,
     goal_achieved: Option<bool>,
     clear_goal_achieved: bool,
 ) -> Result<Sprint> {
     let (_board_dir, repo, _config, _lock) = open_board_locked(project_dir).await?;
     let mut sprint = SprintRepository::load(&repo, id).await?;
     let now = Utc::now();
-    if title.is_some() || goal.is_some() || period.is_some() {
+    let schedule_update = period.is_some();
+    let period = if let Some((start, end)) = period {
+        match (start.or(sprint.start), end.or(sprint.end)) {
+            (Some(start), Some(end)) => Some((start, end)),
+            _ => return Err(Error::SprintPeriodIncomplete(sprint.id.clone())),
+        }
+    } else {
+        None
+    };
+    if title.is_some() || goal.is_some() || schedule_update {
         sprint.update_details(title, goal, period, now)?;
     } else if goal_achieved.is_none() && !clear_goal_achieved {
         return Err(Error::NothingToUpdate);
diff --git a/src/service/sprint/tests.rs b/src/service/sprint/tests.rs
index 6df877b..3e2c02f 100644
--- a/src/service/sprint/tests.rs
+++ b/src/service/sprint/tests.rs
@@ -200,7 +200,7 @@ async fn edit_updates_title_goal_and_period() {
         &sid("S-1"),
         Some("Updated title".to_string()),
         Some("Updated goal".to_string()),
-        Some((start, end)),
+        Some((Some(start), Some(end))),
         None,
         false,
     )
@@ -213,6 +213,112 @@ async fn edit_updates_title_goal_and_period() {
     assert_eq!(edited.end, Some(end));
 }
 
+#[tokio::test]
+async fn edit_preserves_omitted_period_endpoint() {
+    let dir = init_temp().await;
+    let original_start = date(2026, 8, 3);
+    let original_end = date(2026, 8, 14);
+    create_sprint(
+        dir.path(),
+        &sid("S-1"),
+        "Sprint 1",
+        None,
+        Some((original_start, original_end)),
+    )
+    .await
+    .unwrap();
+
+    let edited = edit_sprint(
+        dir.path(),
+        &sid("S-1"),
+        None,
+        None,
+        Some((Some(date(2026, 8, 5)), None)),
+        None,
+        false,
+    )
+    .await
+    .unwrap();
+    assert_eq!(edited.start, Some(date(2026, 8, 5)));
+    assert_eq!(edited.end, Some(original_end));
+
+    let edited = edit_sprint(
+        dir.path(),
+        &sid("S-1"),
+        None,
+        None,
+        Some((None, Some(date(2026, 8, 18)))),
+        None,
+        false,
+    )
+    .await
+    .unwrap();
+    assert_eq!(edited.start, Some(date(2026, 8, 5)));
+    assert_eq!(edited.end, Some(date(2026, 8, 18)));
+}
+
+#[tokio::test]
+async fn edit_rejects_inverted_effective_period_without_mutation() {
+    let dir = init_temp().await;
+    let start = date(2026, 8, 3);
+    let end = date(2026, 8, 14);
+    create_sprint(
+        dir.path(),
+        &sid("S-1"),
+        "Sprint 1",
+        None,
+        Some((start, end)),
+    )
+    .await
+    .unwrap();
+
+    let err = edit_sprint(
+        dir.path(),
+        &sid("S-1"),
+        Some("Changed".to_string()),
+        None,
+        Some((Some(date(2026, 8, 15)), None)),
+        None,
+        false,
+    )
+    .await
+    .unwrap_err();
+    assert_eq!(
+        err,
+        Error::InvalidSprintPeriod {
+            start: date(2026, 8, 15).date_naive(),
+            end: end.date_naive(),
+        }
+    );
+
+    let repo = FileRepository::new(dir.path().join(".pinto"));
+    let unchanged = SprintRepository::load(&repo, &sid("S-1")).await.unwrap();
+    assert_eq!(unchanged.title, "Sprint 1");
+    assert_eq!(unchanged.start, Some(start));
+    assert_eq!(unchanged.end, Some(end));
+}
+
+#[tokio::test]
+async fn edit_rejects_one_sided_effective_period() {
+    let dir = init_temp().await;
+    create_sprint(dir.path(), &sid("S-1"), "Sprint 1", None, None)
+        .await
+        .unwrap();
+
+    let err = edit_sprint(
+        dir.path(),
+        &sid("S-1"),
+        None,
+        None,
+        Some((Some(date(2026, 8, 3)), None)),
+        None,
+        false,
+    )
+    .await
+    .unwrap_err();
+    assert_eq!(err, Error::SprintPeriodIncomplete(sid("S-1")));
+}
+
 #[tokio::test]
 async fn start_moves_planned_to_active_and_persists() {
     let dir = init_temp().await;
diff --git a/tests/cli/common.rs b/tests/cli/common.rs
index 8772cfd..edb7e8b 100644
--- a/tests/cli/common.rs
+++ b/tests/cli/common.rs
@@ -17,6 +17,7 @@ pub(crate) fn pinto(dir: &Path) -> Command {
     // own command and set `LC_ALL`/`LANG` explicitly.
     cmd.current_dir(dir)
         .env("XDG_CONFIG_HOME", dir.join("test-xdg-config"))
+        .env_remove("VISUAL")
         .env("LC_ALL", "en_US.UTF-8")
         .env("LANG", "en_US.UTF-8");
     cmd
diff --git a/tests/cli/sprint.rs b/tests/cli/sprint.rs
index 6ae507f..180fa7f 100644
--- a/tests/cli/sprint.rs
+++ b/tests/cli/sprint.rs
@@ -366,6 +366,113 @@ fn sprint_edit_updates_goal_title_and_period_then_allows_start() {
         "active"
     );
 }
+#[test]
+fn sprint_edit_start_preserves_existing_end() {
+    let dir = TempDir::new().expect("temp dir");
+    pinto(dir.path()).arg("init").assert().success();
+    pinto(dir.path())
+        .args([
+            "sprint",
+            "new",
+            "S-1",
+            "Planning",
+            "--start",
+            "2026-07-06",
+            "--end",
+            "2026-07-20",
+        ])
+        .assert()
+        .success();
+
+    pinto(dir.path())
+        .args(["sprint", "edit", "S-1", "--start", "2026-07-08"])
+        .assert()
+        .success();
+
+    let edited = json_stdout(pinto(dir.path()).args(["sprint", "list", "--json"]));
+    assert_eq!(edited[0]["start"], "2026-07-08T00:00:00+00:00");
+    assert_eq!(edited[0]["end"], "2026-07-20T00:00:00+00:00");
+}
+
+#[test]
+fn sprint_edit_end_preserves_existing_start() {
+    let dir = TempDir::new().expect("temp dir");
+    pinto(dir.path()).arg("init").assert().success();
+    pinto(dir.path())
+        .args([
+            "sprint",
+            "new",
+            "S-1",
+            "Planning",
+            "--start",
+            "2026-07-06",
+            "--end",
+            "2026-07-20",
+        ])
+        .assert()
+        .success();
+
+    pinto(dir.path())
+        .args(["sprint", "edit", "S-1", "--end", "2026-07-22"])
+        .assert()
+        .success();
+
+    let edited = json_stdout(pinto(dir.path()).args(["sprint", "list", "--json"]));
+    assert_eq!(edited[0]["start"], "2026-07-06T00:00:00+00:00");
+    assert_eq!(edited[0]["end"], "2026-07-22T00:00:00+00:00");
+}
+
+#[test]
+fn sprint_edit_rejects_inverted_effective_period_without_mutation() {
+    let dir = TempDir::new().expect("temp dir");
+    pinto(dir.path()).arg("init").assert().success();
+    pinto(dir.path())
+        .args([
+            "sprint",
+            "new",
+            "S-1",
+            "Planning",
+            "--start",
+            "2026-07-06",
+            "--end",
+            "2026-07-20",
+        ])
+        .assert()
+        .success();
+
+    pinto(dir.path())
+        .args([
+            "sprint",
+            "edit",
+            "S-1",
+            "--title",
+            "Changed",
+            "--start",
+            "2026-07-21",
+        ])
+        .assert()
+        .failure()
+        .code(1)
+        .stderr(predicate::str::contains("invalid sprint period"));
+
+    let unchanged = json_stdout(pinto(dir.path()).args(["sprint", "list", "--json"]));
+    assert_eq!(unchanged[0]["title"], "Planning");
+    assert_eq!(unchanged[0]["start"], "2026-07-06T00:00:00+00:00");
+    assert_eq!(unchanged[0]["end"], "2026-07-20T00:00:00+00:00");
+}
+
+#[test]
+fn sprint_edit_rejects_malformed_schedule_input() {
+    let dir = TempDir::new().expect("temp dir");
+    pinto(dir.path()).arg("init").assert().success();
+
+    pinto(dir.path())
+        .args(["sprint", "edit", "S-1", "--start", "not-a-date"])
+        .assert()
+        .failure()
+        .code(1)
+        .stderr(predicate::str::contains("invalid value"));
+}
 
 #[test]
 fn sprint_edit_rejects_empty_title_and_no_fields_without_mutation() {